Avenging Pteraxii

Flying
Canticle (You may tap this creature. If you do, you
gain 1 counter of Maintenance, then trigger any
relevant Canticle effects. All counters of Maintenance
are sacrificed during your end step.) Once you have
2 or more Maintenance counters, deal 2 damage
to any target creature.
{1}{r}: Discard a card from your hand, then draw
a card.