Learn was showcased on the Pop Quiz card, which lets players draw a card before also Learning - which is either discarding a card to draw a card, or fetching a Lesson from "outside the game" (in play, this means the player's sideboard)
Notably, this card has no limitations, so if youve spent your turn producing ample Elf tokens or dropping tons of one-drop Elves (both examples with summoning sickness), you can tap them all down for loads of mana
But, after much discussion, everyone over at SQUARE ENIX decided that invoking the nostalgic love for FINAL FANTASY VI, even in the smallest ways, is the purest version of this collaboration
But, to me, this Sultai build demonstrates that counterspells are the only worthy interaction in 2020
For example, if Vincent's power was 7 when it dealt combat damage to an opponent but is reduced to 6 just before its last ability resolves, it won't deal any additional damage when the last ability resolves