Junktroller on the battlefield. All other cards in hand. Junktroller does not have summoning sickness. You have at least one card in your graveyard. {U}{U}{U} available.
The Gitrog Monster + Dakmor Salvage + Tunneler Wurm
Combo result
Infinite self-mill. Near-infinite self-discard triggers. Prerequisites
Dakmor Salvage in hand. All other permanents on the battlefield.