Grenades

Roll a six-sided dice. Result is:
1 One grenade: Grenades deals 2 damage to target permanent.
2 Two grenades: Grenades deals 4 damage to target.
3 Three grenades: Grenades deals 6 damage to target.
4 Four grenades: Destroy two target creatures.
5 Set of grenades: Destroy 3 creatures with
toughness smaller than 3.
6 Much grenades: Exile all creatures with toughness
smaller than 3 under opponent's control.