Links
A link ends a segment of the spell: everything after it happens later, or somewhere else. On Hit fires the rest where the spell struck, Delay fires it from you a moment later, Echo repeats everything before it, and the conditions (If Sneaking, If Airborne…) let one spell do two different things.
31 links, by tier.
Delay
Tier I · 2 mana · needs any Cord
The rest fires 1 second later, from you.
How to get it: Craft: a Blank Rune, Clock. The recipe is shapeless: any layout, any crafting grid. Also found: Dungeons; Mineshafts.

Modifiers that work on it: Extend, Quicken
If Day
Tier I · 1 mana · needs any Cord
The rest fires only by day.
How to get it: Craft: a Blank Rune, Sunflower and Clock. The recipe is shapeless: any layout, any crafting grid.

If Holding Tool
Tier I · 1 mana · needs any Cord
The rest fires only with a pickaxe, axe, shovel, hoe or shears in hand.
How to get it: Craft: a Blank Rune, Stick and Iron Nugget. The recipe is shapeless: any layout, any crafting grid.

If In Fields
Tier I · 1 mana · needs any Cord
The rest fires only with farmland within 4 blocks of your feet.
How to get it: Craft: a Blank Rune, Wheat Crops and Clock. The recipe is shapeless: any layout, any crafting grid.

If Night
Tier I · 1 mana · needs any Cord
The rest fires only at night.
How to get it: Craft: a Blank Rune, Ink Sac and Clock. The recipe is shapeless: any layout, any crafting grid.

If Raining
Tier I · 1 mana · needs any Cord
The rest fires only while rain or snow falls on you.
How to get it: Craft: a Blank Rune, Water Bucket and Clock. The recipe is shapeless: any layout, any crafting grid.

If Underground
Tier I · 1 mana · needs any Cord
The rest fires only with no open sky above you.
How to get it: Craft: a Blank Rune, Cobblestone and Clock. The recipe is shapeless: any layout, any crafting grid.

On Harvest
Tier I · 2 mana · needs any Cord
The rest waits up to a minute for the next ripe crop you pick, then fires there.
How to get it: Craft: a Blank Rune, Wheat Crops and Tripwire Hook. The recipe is shapeless: any layout, any crafting grid.

On Mine
Tier I · 2 mana · needs any Cord
The rest waits up to 30 seconds for the next block you mine, then fires there.
How to get it: Craft: a Blank Rune, Iron Pickaxe and Tripwire Hook. The recipe is shapeless: any layout, any crafting grid.

If Airborne
Tier II · 1 mana · needs a Copper Cord or better
The rest fires only if you’re in the air. Build aerial finishers.
How to get it: Craft: a Blank Rune, Feather and Phantom Membrane, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid. Also found: Shipwrecks; Buried treasure; Trial vaults; Phantoms (5%).

If Alone
Tier II · 1 mana · needs a Copper Cord or better
The rest fires only with no other player or monster within 16 blocks.
How to get it: Craft: a Blank Rune, Compass and Ink Sac, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid.

If Brimming
Tier II · 1 mana · needs a Copper Cord or better
The rest fires only with more than half your mana left.
How to get it: Craft: a Blank Rune, Glass Bottle and Lapis Lazuli, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid.

If Near Ally
Tier II · 1 mana · needs a Copper Cord or better
The rest fires only with a friendly player or your pet within 8 blocks.
How to get it: Craft: a Blank Rune, Compass and Bone, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid.

If Sneaking
Tier II · 1 mana · needs a Copper Cord or better
The rest fires only if you’re sneaking. Build two spells in one.
How to get it: Craft: a Blank Rune, Leather Boots, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid. Also found: Shipwrecks; Buried treasure; Trial vaults.

If Unhurt
Tier II · 1 mana · needs a Copper Cord or better
The rest fires only at full health.
How to get it: Craft: a Blank Rune, Apple and Clock, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid.

Imbue
Tier II · 3 mana · needs a Copper Cord or better
The rest isn’t cast: it’s stored, with 3 charges, in what the shape before it touches. With Self, the item in your hand (a weapon’s hits, a bow’s arrows, a tool’s blocks, armour when you’re hurt, a block where it’s placed, anything else when used), or with empty hands the block you’re looking at. Any block becomes a glyph that goes off at whoever steps on, uses, shoots or breaks it, or when it’s powered. The stored part costs 3 times as much; releasing it costs no mana, but everything you’ve imbued shares one cooldown as long as the stored spell’s, and you keep up to 6 imbued items.
How to get it: Craft: a Blank Rune, Bottle o’ Enchanting, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid.

On Catch
Tier II · 2 mana · needs a Copper Cord or better
The rest waits up to 2 minutes for your next catch with a rod, then fires where you reeled it in.
How to get it: Craft: a Blank Rune, Fishing Rod and Tripwire Hook, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid.

On Hit
Tier II · 2 mana · needs a Copper Cord or better
The rest fires wherever the shape before it hits.
How to get it: Craft: a Blank Rune, Target, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid. Also found: Shipwrecks; Buried treasure; Trial vaults.

On Hurt
Tier II · 2 mana · needs a Copper Cord or better
The rest fires at whatever next hurts you (within 15 seconds).
How to get it: Craft: a Blank Rune, Cactus, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid. Also found: Shipwrecks; Buried treasure; Trial vaults.

On Land
Tier II · 2 mana · needs a Copper Cord or better
The rest fires when you next touch the ground.
How to get it: Craft: a Blank Rune, Hay Bale, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid. Also found: Shipwrecks; Buried treasure; Trial vaults.

On Mount
Tier II · 2 mana · needs a Copper Cord or better
The rest waits up to 30 seconds for you to ride something, then fires at your mount.
How to get it: Craft: a Blank Rune, Saddle and Tripwire Hook, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid.

On Splash
Tier II · 2 mana · needs a Copper Cord or better
The rest waits up to 30 seconds for you to enter water, then fires there.
How to get it: Craft: a Blank Rune, Water Bucket and Tripwire Hook, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid.

On Sprint
Tier II · 2 mana · needs a Copper Cord or better
The rest waits up to 15 seconds for you to start sprinting, then fires from you.
How to get it: Craft: a Blank Rune, Sugar and Tripwire Hook, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid.

On Wake
Tier II · 2 mana · needs a Copper Cord or better
The rest waits up to 10 minutes for you to wake from a bed, then fires from you.
How to get it: Craft: a Blank Rune, White Bed and Tripwire Hook, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid.

On Weakness
Tier II · 2 mana · needs a Copper Cord or better
The rest fires at each creature the shape before it strikes with an element it’s weak to.
How to get it: Craft: a Blank Rune, Fermented Spider Eye and Target, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid.

Pulse
Tier II · 2 mana · needs a Copper Cord or better
The rest fires three times, one second apart, from you. After On Hit or On Kill, only for the first hit or kill.
How to get it: Craft: a Blank Rune, Redstone Repeater, plus 2 Lapis Lazuli and a Gold Ingot. The recipe is shapeless: any layout, any crafting grid. Also found: Shipwrecks; Buried treasure; Trial vaults; Stronghold libraries; Woodland mansions.

Modifiers that work on it: Quicken
Combo
Tier III · 2 mana · needs an Amethyst Cord or better
The rest fires only on every third cast of this spell: a finisher.
How to get it: Craft: a Blank Rune, 2x Redstone Repeater, plus a Mana Crystal and a Diamond. The recipe is shapeless: any layout, any crafting grid. Also found: Trial vaults.

Echo
Tier III · 2 mana · needs an Amethyst Cord or better
Everything before it fires again 0.5 seconds later. After On Hit or On Kill, only for the first hit or kill.
How to get it: Craft: a Blank Rune, 2x Echo Shard, plus a Mana Crystal and a Diamond. The recipe is shapeless: any layout, any crafting grid. Also found: Ancient cities; Stronghold libraries.

On Kill
Tier III · 2 mana · needs an Amethyst Cord or better
The rest fires at each creature the shape before it kills.
How to get it: Craft: a Blank Rune, Bone Block, plus a Mana Crystal and a Diamond. The recipe is shapeless: any layout, any crafting grid. Also found: Bastions; Woodland mansions.

On Low Health
Tier III · 2 mana · needs an Amethyst Cord or better
The rest fires when your health drops below 30% (within 30 seconds).
How to get it: Craft: a Blank Rune, Golden Apple, plus a Mana Crystal and a Diamond. The recipe is shapeless: any layout, any crafting grid. Also found: Ancient cities.

On Reaction
Tier III · 2 mana · needs an Amethyst Cord or better
The rest fires at each creature the shape before it sets off an element reaction on (Shatter, Conduct, Blight…).
How to get it: Craft: a Blank Rune, Brewing Stand, plus a Mana Crystal and a Diamond. The recipe is shapeless: any layout, any crafting grid. Also found: Trial vaults.
