Fenrir, Rebellious Son

Flying, Double Strike.
When Fenrir, Rebellious Son enters the battlefield, you may destroy target creature and/or target artifact.
Boast — {2}{r}: Deals 5 damage to target
permanent or player.
{2}, Put 2 +1/+1 counters on Fenrir, Rebellious
Son if you gained 5 life or more on this turn.
"I will nivir lit yii diwn, Fithir... GROW UP!"