Fenrax the Stormfront

Flying, haste, prowess

When Fenrax the Stormfront deals combat damage
to a player put that many charge counters on Fenrax
the Stormfront.

Remove a charge counter from Fenrax the
Stormfront: Add {u/r}, use this only to cast instants
and sorceries.

I heard, as it were, the noise of thunder...