Boros Challenger - Magic Open House Promo (Foil)
Guilds of Ravnica
Boros Challenger - Magic Open House Promo (Foil)
Guilds of RavnicaBoros Challenger 
Creature — Human Soldier
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
: Boros Challenger gets +1/+1 until end of turn.
2/3