Sol

Flying, indestructible

Splendor — Whenever you cast a spell that shares at least one color with Sol, choose one —
• Creatures you control gain first strike.
• Tap target creature, put a stun counter on it.
• Target player sacrifices a creature.
{bull} Deal damage to any target equal to this creature power.
{bull} Put a +1/+1 counter on each creature you control.

Whenever you proliferate not by Sol's effect, proliferate again.