Chain Stasis
{U}
Instant
You may tap or untap target creature. Then that creature's controller may pay {2}{U}. If the player does, they may copy ~this~ and may choose a new target for that copy.
String of Disappearances
{U}
Instant
Return target creature to its owner's hand. Then that creature's controller may pay {U}{U}. If the player does, they may copy ~this~ and may choose a new target for that copy.