Inkmoth Nexus [Secret Lair Drop Series] Fungus Dinosaur you may exchange control of

you may exchange control of target creature you control and target creature with power less than or equal to that creature's power an opponent controls

"I'd call that a successful first test

Set: Morningtide Promos Type: Artifact Rarity: Rare Cost: {4} As Door of Destinies enters the battlefield

It also makes good use of several "pitch" spells like Force of Will and Pyrokinesis

Set: Eventide Type: Creature — Elf Druid Rarity: Rare Cost: {1}{G} {T}: For each color among permanents you control

Inkmoth Nexus [Secret Lair Drop Series] Fungus Dinosaur you may exchange control ofSet: Secret Lair Drop Series Type: Land Rarity: Rare {T}: Add {C}. {1}: Inkmoth Nexus becomes a 1 1 Phyrexian Blinkmoth artifact creature with flying and infect until end of turn. It's still a land. (It deals damage to creatures in the form of 1 1 counters and to players in the form of poison counters.)