The Healing Church

{t}: Add {w} for every two {x} rounded down.

{w}: Target creature you control with a white mana in its mana cost gets +1/+1 until the end of its next combat. Or dont pay {w}, discard a card with at least one white mana in its cost: the creature gets +X/+X until the end of its next combat, where X is the number of white mana in the discarded card's mana.