Aria, the Grand Unifier

Vigilance

At the beginning of your combat, if you control a Goblin and a non-Goblin creature, creatures you control gain +1/+0 until end of turn.

Whenever a non-Goblin creature you control dies, create a 1/1 Goblin creature token.

{1}, {t}, Sacrifice a Goblin: Put a +1/+1 counter on Aria, the Grand Unifier.