Absol has an ability that when it is in play, your opponent's active basic Pokmon has one more colorless in its retreat cost

Abolisher of Bloodlines Abundant Maw All Is Dust Angelic Aberration Anticausal Vestige Artisan of Kozilek Aurora of Emrakul Azlask, the Swelling Scourge Bane of Bala Ged Barrage Tyrant Basking Broodscale Bearer of Silence Benthic Anomaly Benthic Infiltrator Birthing Hulk Bismuth Mindrender Blight Herder Blinding Drone Blisterpod Breaker of Armies Breaker of Creation Brisela, Voice of Nightmares Brood Butcher Brood Monitor Broodwarden Catacomb Sifter Chittering Dispatcher Chittering Host Conduit of Emrakul Conduit of Ruin Corrupted Shapeshifter Cryptic Cruiser Culling Drone Cultivator Drone Deathless Behemoth Deceiver of Form Decimator of the Provinces Deepfathom Skulker Depth Defiler Desolation Twin Devourer of Destiny Dimensional Infiltrator Distended Mindbender Dominator Drone Dread Defiler Dread Drone Dronepack Kindred Drowner of Hope Drowner of Truth Drownyard Behemoth Drownyard Lurker Dust Stalker Echoes of Eternity Elder Deep-Fiend Eldrazi Aggressor Eldrazi Conscription Eldrazi Devastator Eldrazi Displacer Eldrazi Linebreaker Eldrazi Mimic Eldrazi Obligator Eldrazi Ravager Eldrazi Repurposer Eldrazi Skyspawner Eldritch Immunity Emrakul's Hatcher Emrakul's Messenger Emrakul, the Aeons Torn Emrakul, the Promised End Emrakul, the World Anew Endbringer Endless One

Get an Instant Loan Offer Against Your Graded Trading Cards Within 30 Minutes
Once it is in play, your legendary creatures become Birds of Paradise with Vigilance tacked on, allowing you to attack before tapping them to make mana of any color during your second main phase
Designed for everyday carry, it keeps cards organized while adding a quiet material story to daily use
I would rate this higher if we had the completed dungeon trigger each turn, but feel confident beating down while Birding a large blocker or your terrestrial creature