Eren Jaeger

Vow to Fight: Whenever Eren Jaeger attacks,
put a +1/+1 counter on him.
Resolve of the Scout: {t}, Sacrifice another creature:
Eren Jaeger gains indestructible until end of turn.
At the beginning of your combat, if Eren Jaeger's
power is 5 or greater, you may pay {6}. If you do, transform Eren Jaeger. This ability costs {1} less
to cast for each soldier that died during
your last turn.