Ardbert, Warrior of Darkness (FIC 164)

Legendary Creature — Spirit Warrior • Mana cost: {1}{W}{B} • Final Fantasy Commander • Rare

Whenever you cast a white spell, put a +1/+1 counter on each legendary creature you control. They gain vigilance until end of turn.
Whenever you cast a black spell, put a +1/+1 counter on each legendary creature you control. They gain menace until end of turn.

"Always we took the burden of fighting upon ourselves. That's what heroes do, isn't it?"

Illustrated by Thanh Tuấn.