Yarys, Wisdom of the Depths

Hexproof, Islandwalk
Convoke, (Your creatures can help cast this spell.
Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
{u}{u}{u}, Scry 2, draw 1
Whenever you draw a card, you may place a
+1/+1 counter on target creature you control.