Matt, Dungeon Master

Whenever you flip a coin or roll a die, you may
pay {1}. If you do, draw a card.
{1}: Venture into the dungeon. Activate this
ability only if you have a full party. (Your party consists of up to one each of Cleric, Rogue, Warrior,
and Wizard.)
You may cast Matt, Dungeon Master from your graveyard or from exile.