Quicksilver Lock

Flying At the beginning of your upkeep, sacrifice Chisei unless you remove a counter from a permanent you control.

Artifacts, creatures, and lands your opponents control enter tapped.

Islands don't untap during their controllers' untap steps.

At the beginning of each player's upkeep, that player puts a flood counter on target non-Island land they control of their choice. That land is an Island for as long as it has a flood counter on it. At the beginning of each end step, if all lands on the battlefield are Islands, remove all flood counters from them.