Gangooka, Saint of Slime

Whenever a player taps a forest, island, or swamp for mana, create a 0/1 green Frog creature token with "Spells and abilities that target frogs you control cost {1} more to cast for each two frogs you control."
Tap 3 other untapped frogs you control: Target opponent loses 3 life.
Tap 5 other untapped frogs you control: Attacks cannot be declared this turn.