Unpredictable Flow

Roll a six-sided dice; then complete the effect tied
to the result:
1. Untap all cards your opponent's control.
2. Sacrifice a creature.
3. Gain a +1/+1 counter on creatures you control.
4. Gain a +1/+1 counter on creatures you don't control.
5. Remove counters from permanents the field
equal to 5.
6. Untap all cards you control.