This card not only lets you copy Krark, the Thumbless (which would already be pretty good), but also lets you copy other creatures that can be extremely useful in this kind of deck
Tri-lands cycle Neapolitan mana Here we have five different cards: Raffines Tower, Xanders Lounge, Ziatoras Proving Ground, Jetmirs Garden and Sparas Headquarters
Strixhaven Stadium has become one of my favorite win conditions in aggressive decks
For instance, a trainer can draw you two cards, but in the core physical game, you usually discard your hand and draw seven
Eight Llanowar Elves would still be powerful and redundant and probably one of the better strategies in Pioneer, but Once Upon a Time just makes it egregious
This attack does 20 damage plus 20 more damage for each Fire Energy discard in this way