Commander's Sphere

T: Create your choice of a Blood token, a Clue token, or a Food token. 3, T, Sacrifice three artifact tokens with different names: Search your library for an artifact card, put it onto the battlefield, then shuffle. Activate only as a sorcery.

Equipped creature gets +3/+1. Whenever equipped creature dies, you may reveal cards from the top of your library until you reveal a creature card that shares a creature type with it. Put that card into your hand and the rest on the bottom of your library in a random order. Equip 1

Choose a creature type. Creatures that aren't of the chosen type get -3/-3 until end of turn.

You draw two cards and lose 2 life.

As long as Gaea's Liege isn't attacking, its power and toughness are each equal to the number of Forests you control. As long as Gaea's Liege is attacking, its power and toughness are each equal to the number of Forests defending player controls. T: Target land becomes a Forest until this creature leaves the battlefield.

As an additional cost to cast this spell, sacrifice an artifact or creature. Draw two cards.

Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)

Other Zombie creatures have swampwalk. (They can't be blocked as long as defending player controls a Swamp.) Other Zombies have "B: Regenerate this permanent."