switch

Cast this spell only after combat. Destroy all creatures that were blocked by target Wall this turn. They can't be regenerated. For each creature that died this way, put a creature card from the graveyard of the player who controlled that creature the last time it became blocked by that Wall onto the battlefield under its owner's control.

Changeling (This card is every creature type.) : Target creature gains all creature types until end of turn. : Target creature loses all creature types until end of turn.

Prevent all combat damage that would be dealt to attacking creatures you control.