Seeker of Sanctity

You may exile seven white cards from your hand
rather than pay this spell's mana cost. If you cast
this spell this way, it can't be countered and gains
haste until end of turn.
Nonbasic landwalk, indestructible
Whenever Seeker of Sanctity deals combat
damage to a player, that player skips their next
combat phase. You gain 3 life.