Forever Stand - Protecter

+2: Create x 0/3 Protecter with Defender, Flying, Hexproof, and Metal(Immune to all abilities.) You gain Half of x life, if odd, the more amount.
0: Exile all cards in your graveyard, for each card exiled, either deal 1 damage to target for each card exiled or gain 1 life for each card exiled.
-15: This card turns into a 20/20 Protecter with Trample, Flying, Vigilance, Indestructible, Metal and its still a Planeswalker as long as you want.