Vyraal, Rutting Storm

First Strike, Trample

At the beginning of combat on your turn, if you control another Wyrm, Vyraal gains indestructible and “Whenever Vyraal deals combat damage to a creature, it deals that much damage to that creature’s controller” until end of turn.

Whenever an opponent casts a spell during your turn, put a +1/+1 counter on Vyraal.