Blaxtin, Stalwart Cleric

Companion — Your starting deck contains only
white and black cards, and land cards.
(If this card is your chosen companion, you may cast
it once from outside the game.)
When you cast your first white spell each turn,
you gain hexproof, and permanents you
control gain indestructible, until end of turn.
When you cast your first black spell each turn,
return target creature with converted mana cost
three or less under your control from a graveyard.