
Changeling (This card is every creature type.)
As Morophon enters, choose a creature type.
Spells of the chosen type you cast cost less to cast. This effect reduces only the amount of colored mana you pay.
Other creatures you control of the chosen type get +1/+1.
Pick a creature type as Morophon enters, then flood the board with that tribe at a steep discount while every member gets a buff. You build a wide, synergistic creature army backed by tribal lords and payoffs, then close games through combat or a tribal combo. Morophon's five-color identity lets you splash the best support spells from any color for your chosen creature type.
Commit hard to one tribe (Elves, Goblins, Dragons, Slivers, or all-changeling) and load up on its best lords and payoffs, then add fast mana and ramp (Sol Ring, Arcane Signet, Cryptic Trilobite) to deploy Morophon ahead of schedule. Improve mana fixing with fetch/dual lands and Cavern of Souls, and add resilience like Heroic Intervention plus a haymaker finisher such as Craterhoof Behemoth. Tutors like Fierce Empath or tribal-specific search smooth out consistency for the higher-power builds.
Seeded from a single deck — rates appear once more public decks exist.
→ Infinite LTB, Infinite ETB, Infinite damage
→ Infinite damage, Infinite ETB, Infinite lifegain triggers
→ Reduce the toughness of creatures opponents control to 0, Reduce the toughness of each creature opponents control to 0 upon entering
→ Cast all Sliver creature cards in your hand and library, Near-infinite colorless mana
→ Infinite damage, Infinite ETB, Infinite lifegain triggers
Combos via Commander Spellbook.
Same color identity (BGRUW), by popularity.