The Dungeon Master

Whenever you roll one or more dice, venture
into the dungeon, and draw a card.
Whenever you roll a die, you may add X to the
result, where X is the number of +1/+1 counters
on The Dungeon Master.
Whenever you roll a die's highest natural result,
or you complete a dungeon, put a +1/+1 counter
on The Dungeon Master.