Adventurer's Guild Arena

When Adventurer's Guild Arena enters the battlefield, up to one target creature you control
fights up to one target creature an opponent
controls.
Whenever a creature you control wins a fight (it survived and the other creature did not), put a
+1/+1 counter on that creature and create a
Treasure token.
A place to hone one's skills, but moreover, a place to
amass bragging rights.