You and target player exchange control of the creature you each control with the highest mana value. Then exchange control of artifacts the same way. If two or more permanents a player controls are tied for highest, their controller chooses one of them.
Icatian Store enters tapped.You may choose not to untap Icatian Store during your untap step.At the beginning of your upkeep, if Icatian Store is tapped, put a storage counter on it., Remove any number of storage counters from Icatian Store: Add for each storage counter removed this way.
Clockwork Beast enters with seven +1/+0 counters on it.At end of combat, if Clockwork Beast attacked or blocked this combat, remove a +1/+0 counter from it., : Put up to X +1/+0 counters on Clockwork Beast. This ability can't cause the total number of +1/+0 counters on Clockwork Beast to be greater than seven. Activate only during your upkeep.
At the beginning of your upkeep, put a time counter on Infinite Hourglass.All creatures get +1/+0 for each time counter on Infinite Hourglass.: Remove a time counter from Infinite Hourglass. Any player may activate this ability but only during any upkeep step.
, : Create a 1/1 colorless Snake artifact creature token. It has "Whenever this creature deals damage to a player, that player gets a poison counter." (A player with ten or more poison counters loses the game.)
At the beginning of your upkeep, put a time counter on Time Bomb., , Sacrifice Time Bomb: Time Bomb deals damage equal to the number of time counters on it to each creature and each player.