Erym, Midnight Whisperer

Lifelink
Whenever a card you own is put into exile from anywhere, draw a card, then put a card from
your hand on the bottom of your library. Put a
+1/+1 counter on Erym, Midnight Whisperer.
Remove twice X counters from Erym, pay twice
X life: You may cast a spell you own in exile with
mana cost X or less without paying its mana cost.
If it's a creature or enchantment spell, it can't be
countered.