Rashagal, Locus of Knowledge

Rashagal, Locus of Knowledge gains a
+1 +1 counter whenever another creature
or effect causes you to you draw a card,
discard a card, or counter a spell.
You may remove 1 +1 +1 counter to tap or
untap target permanent, 2 counters to draw
a card, or 3 counters to Counter Target
Spell.