Monstrosity of the Lake

Monstrosity of the Lake

Legendary Creature - Kraken | Power/Toughness: 4 / 6 (CMC 5)
When Monstrosity of the Lake enters the battlefield, you may pay . If you do, tap all creatures your opponents control, then put a stun counter on each of those creatures. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Islandcycling (, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)