Aegis of the Legion (CLU 22)

Artifact — Equipment • Mana cost: {R}{W} • Ravnica: Clue Edition • Rare

Equipped creature gets +1/+1 and has mentor. (Whenever it attacks, put a +1/+1 counter on target attacking creature with lesser power.)
Whenever equipped creature mentors a creature, put a shield counter on that creature. (If that creature would be dealt damage or destroyed, remove a shield counter from it instead.)
Equip {3}

Illustrated by Alexandre Honoré.