Dimension Dice

Roll a D6. Then put a creature from your
hand with a mana value equal to or less than
the result plus X onto the battlefield. If a
result of 6 is rolled, that creature also enters
with a Lucky 1 counter. If a creature wasn't
put onto your battlefield this way, return this
spell to your hand and draw a card. X is equal
to the amount of times your commander has
been cast this game.