Delve into the Dungeon

Suspend 3—{0}
At the beginning of each upkeep, if Delve into
the Dungeon has time counters on it and you
don't control a full party, put a time counter on
it. (Your party consists of up to one each of Cleric,
Rogue, Warrior, and Wizard.)
Create five Treasure tokens. (It's an artifact with
"Tap, Sacrifice this artifact: Add one mana of any
color.")