Esika, God of the Tree // The Prismatic Bridge

The modal double-faced frame is doing more here than its reputation suggests. The front is a five-color mana enabler: a fragile 1/4 that turns every other legendary creature you control into a rainbow rock with vigilance, exactly the engine a legends-matter deck wants when it needs to skip ahead to its five-drops. But the card's real gravity lives on the back, where the enchantment side turns your upkeep into a guaranteed hit off the top of the library. That second face recasts the whole design. Nothing about the front demands you play the enchantment, and nothing about the enchantment cares that you own a creature named Esika at all: two independent engines on one card, and you choose which one the deck actually wants. The upkeep trigger has no mana cost paid at resolution, restricting only whether it cheats out a creature or planeswalker, and no ceiling on the size of what it drops, which is why it became the payoff of choice for decks whose only real problem is surviving to the next turn. What splits the two halves is that they reward opposite deckbuilding instincts: the tap-for-any-color side wants a wide board of legendary creatures, the reveal-until-a-creature-or-planeswalker side wants a library stuffed with the biggest bombs you can afford to hit. One card, two archetypes, and that fork is the whole point.