edhseer Commander synergy, explained
Instant
Mana cost: {G}{U}
Target land becomes a 3/3 Elemental creature with flying until end of turn. It's still a land.
on-cast — turns something into a creature
Causes: nothing.
Cares about: nothing.
an instant is cast — 3,931 cards in the game can cause this (Hydroform is one).
When Hydroform is cast:
427 other cards care about it too. These are the ones with the most connections.
anything is cast — 31,128 cards in the game can cause this (Hydroform is one).
When Hydroform is cast:
5 other cards care about it too. These are the ones with the most connections.