At the beginning of your upkeep, sacrifice a Snake. Whenever Shisato, Whispering Hunter deals combat damage to a player, that player skips their next untap step.
When Shivan Sand-Mage enters the battlefield, choose one — • Remove two time counters from target permanent or suspended card. • Put two time counters on target permanent with a time counter on it or suspended card. Suspend 4—{R}