War, Harbinger of Madness

Breakthrough
Trigger - Enter: You may send one War Minion Clash token to Oblivion. If you do, search your deck for a red Contender Weapon and reveal it, shuffle your deck, then put that card on top.
Trigger - Attack: This card gets +1/+0 for each War Minion Clash token that was defeated or sent to Oblivion this turn.