Fallen Phyrexians were transmuted into elementals by Gaea long ago, but Yavimaya's other inhabitants still regard them with unease.

Gaea's Protector

Gaea's Protector must be blocked if able.

Jumpstart 2022

The List

Dominaria

If each creature the defending player controls can’t block for any reason (such as being tapped), then Gaea’s Protector isn’t blocked. If there’s a cost associated with blocking Gaea’s Protector, the defending player isn’t forced to pay that cost, so it doesn’t have to be blocked in that case either.

Only one creature is required to block Gaea’s Protector. Other creatures may also block it, and are free to block other creatures or not block at all.

The defending player, not you, chooses which creature blocks Gaea’s Protector.