Rishka, Isolated Icelord

At the beginning of your end step roll a D20.
Whenever you roll a D20 do the indicated effect.
1-10 Tap a creature it doesnt untap during its controllers untap step.
11-18 Tap a permanent it doesnt untap during
its controllers untap step. Untap a permanent you control.
19-20 Tap 2 permanents they dont untap during
its controllers untap step,untap two permanents
you control. Draw a card.