what are the black yugioh cards Illusion Ritual [MRL-051] Super Rare This card is used to Ritual Summon Black Luster Soldier INFO-JP006 Dark Magician the Ebon

Enchantment - Saga Vault 12: The Necropolis (As this Saga enters and after your draw step, add a lore counter

So I guess there's also that element to sideboard cards

Other than the casting restriction, the legendary supertype on an instant carries no additional rules

Nexus turns all of our non-changeling tribal support cards into changelings so they all benefit from each other

Its also possible it slots right into a Fires of Invention build, since it has potential applications in all stages of the game early on you can cycle it to help you find lands or Fires of Invention, in the mid-game you can cycle it without it using up a spell slot, and then in the late-game you can just cast it to draw four cards for free

Cross Heart is a unique card with a TCG equivalent: "Heartfelt Appeal," released after GX's anime