Thunder-Matches Arena

At the end of your turn, remove 1 surprise counter from each articaft you control.
{t}: Add any colour of mana to your mana pool. Spend this mana only to cast Wrestler creatures.
{3},{t}: Search your library for an artifact and put it onto the battlefield with 2 surprise counters on it. When an artifact that entered the battlefield this way has no surprise counters on it, destroy it.
It used to have walls.