Fish Bowl

This card can only be used by tapping X islands, where X is the number of lands under your control.
Attach this card as an enchantment to any island you control, that island does not untap while this card remains attached to it.
Whenever a Fish creature/token you control is destroyed, summon any number of 1/1 piranha tokens with "all for one" to your side of the field, up to the power of the destroyed creature. These tokens are unusable until your next turn.