Shell Cove enters tapped. {T}: Add {G} or {U}. {9}{G/U}: Shell Cove becomes a 7/7 green and blue Leviathan creature with ward {3} until end of turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to green and blue. Activate only once each turn.
When this land enters, sacrifice it. If you do, search your library for a basic Plains or Island card, put it onto the battlefield tapped, then shuffle. {1}{W}{W}{U}{U}, Discard this card: Counter target spell. You gain 3 life.
{T}: Add {C}. {3}, {T}: Create a 1/1 white Golem creature token. Spend mana of three different colors to activate this ability. {T}: Put a +1/+1 counter on target creature. It gains flying until end of turn. Activate only as a sorcery and only if you control ten or more permanents.
When this creature transforms into Splintered Soul, create X 3/1 colorless Cyborg Soldier artifact creature tokens. Whenever Splintered Soul or another Cyborg you control dies, you gain 1 life.
Menace Amity — Whenever you attack with Splitting Smog and exactly one other creature, you may pay {1}{R}. If you do, attacking creatures you control get +2/+0 until end of turn.
This spell costs {1} less to cast for each differently named land you control. Stella's Journal enters with X page counters on it. At the beginning of your end step, if you have fewer cards in hand than the number of page counters on Stella's Journal, draw cards equal to the difference.
(Color indicator: Stitches, Orphaned is blue, red, and green)
Trample Amity — Whenever you attack with Stitches, Orphaned and exactly one other creature, transform Stitches at the beginning of the next turn's upkeep.
Supercharger enters with X charge counters on it. {1}, {T}, Remove a charge counter from Supercharger: Put a +1/+1 counter on target creature. Activate only as a sorcery.
Ward {2} Amity — Whenever Surging Mudskipper attacks, surveil 1. You may play that card from your graveyard this turn. If exactly one other creature attacked with it, this ability triggers three times instead.
...to teach them that survival will inevitably demand change.