Orcish Environmentalists

This enchantment can't be the target of white spells or abilities from white sources. Sacrifice an Orc: Each player may tap any number of untapped white creatures they control. For each creature tapped this way, that player chooses up to two Plains. Then destroy all Plains that weren't chosen this way by any player.

This creature can't attack unless at least two other creatures attack. This creature can't block unless at least two other creatures block.

: Target land becomes a Swamp until its controller's next untap step.

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.) Change the text of target permanent by replacing all instances of one color word with another or one basic land type with another until end of turn. (For example, you may change "nonred creature" to "nongreen creature" or "plainswalk" to "swampwalk.")