Preston, the Vanisher | Karmic Guide | Glasspool Mimic // Glasspool Shore

Cards

Cast
Karmic Guide by paying ({3} magic symbol) ({W} magic symbol) ({W} magic symbol) .
When
Karmic Guide enters the battlefield, it triggers, returning
Glasspool Mimic to the battlefield from your graveyard.
Choose not to have
Glasspool Mimic copy anything as it enters the battlefield.
Glasspool Mimic dies as a state-based action due to having zero toughness.
Preston triggers, creating a copy of
Glasspool Mimic that is a 0/1 Illusion.
Choose to have the
Glasspool Mimic token enter the battlefield as a copy of
Karmic Guide.
When the
Glasspool Mimic token enters the battlefield, it triggers, returning the nontoken
Glasspool Mimic to the battlefield from your graveyard.
Repeat from step 3.