Emeritus of Truce // Swords to Plowshares prepared).
Easy Prerequisites
An opponent controls as many or more creatures as you do.
Mana Needed
({W} magic symbol) available.
Steps
Cast a copy of Swords to Plowshares from exile by paying one mana, unpreparing
Emeritus of Truce.
When you cast this,
Displacer Kitten and
Storm-Kiln Artist triggers.
Resolve the
Displacer Kitten ability, flickering
Emeritus of Truce // Swords to Plowshares.
When
Emeritus of Truce enters, it triggers, causing a player to create a 1/1 Inkling creature with flying, then becoming prepared.
Resolve the remaining trigger, creating a Treasure token.
Resolve the spell from step 1.
Activate the Treasure token by tapping and sacrificing it, adding one mana.
Repeat.
Notes
The exact results and the targeting choices you make in steps 1 and 4 depend on the board state, since you need to ensure that an opponent always has more creatures than you by the end of step 4.