Arthur, Once and Future King

Arthur, Once and Future King cannot be countered if you played a land this turn.

Whenever a land enters play under your control, create a 2/2 white Knight human creature token
with vigilance. During your upkeep if you have 7 or more lands, target player may return a creature, equipment or land card from their graveyard to play.

Lands and human creatures you control
have ward {2}