Gamblor The Goblin

Whenever you roll one or more dice or flip a coin,
add a luck token the Gamblor The Goblin.
{t}: Remove 5 luck tokens from Gamblor
The Goblin, Roll a d20.
1-10| Add {r}{r}, {u}{u}, or {r}{u}.
11-15| Draw two cards, discard a card.
16-19| Return target artifact from your graveyard
to your hand.
20| The next dice roll or coin flip you do,
choose the results.