Bertoch, Ediful Melodist

Whenever you cast a creature spell, put a
learning counter on Bertoch. Then you may transform Bertoch.
Creature spells you cast with mana value less
than or equal to the number of learning counters
on Bertoch have demonstrate {1}{r}. Tokens
created this way gain haste until end of turn.
—
We are many voices of a chord. Our harmony
ensures our future.