Braingeyser

Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players discard cards and sacrifice creatures the same way.

Enchant creature Enchanted creature has protection from red. This effect doesn't remove this Aura.

Enchant Wall Enchanted Wall can attack as though it didn't have defender.

Destroy all lands.

Banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Enchant creature Enchanted creature has protection from black. This effect doesn't remove this Aura.

Enchant creature W: Enchanted creature gets +1/+1 until end of turn.

Enchant creature Enchanted creature has protection from blue. This effect doesn't remove this Aura.