yugioh cards that discard for effect Spectral, Dragon Ruler of Flickers and Nebulus, Dragon Ruler of Mishaps Morphing Jar - Yu-Gi-Oh! Throwback

(3/19/2021) If an effect allows an opponent to cast spells any time they could cast an instant (for example, if your opponent also controls Teferi), the restriction of Teferi's last ability takes precedence over that permission.

$2.79 Path to Exile Lorwyn Eclipsed Commander Decks $7.99 Gavony Township Innistrad $0.49 Pledge of Unity War of the Spark $6.49 Damning Verdict Final Fantasy Commander Decks $2.49 Swords to Plowshares Tarkir: Dragonstorm Commander Decks $9.99 Eiganjo, Seat of the Empire Kamigawa: Neon Dynasty $10.99 Banner of Kinship Foundations $4.49 Patchwork Banner Bloomburrow $7.49 Pearl Medallion Modern Horizons 3 $3.49 Scurry Oak Modern Horizons 2 $0.35 Bartolome del Presidio The Lost Caverns of Ixalan $2.29 Swords to Plowshares Universes Beyond: Doctor Who 0 results found

A good example is the Avatar: The Last Airbender set, where many new lessons were printed, but without a single learn card in the set

Solgaleo - 142/236 (Cosmic Eclipse Stamped) 142 - Miscellaneous Cards Products Holofoil The Pokmon Company Discard 2 Energy from this Pokmon

That said, this is a great project, better than the current main MSE template for YGO