Jace, Vryn's Prodigy // Jace, Telepath Unbound

The design tension here is how a two-mana 0/2 with no immediate impact earns a spot: the front face is a looting engine that fills its own graveyard toward the transform threshold, so the card that does nothing to the board is quietly assembling the condition for its own flip. Five cards in the yard and a single tap later, the creature becomes a planeswalker that starts at five loyalty and never needs to attack. What makes the flip so punishing is the timing: the transform is stapled to the activated ability, so the same tap that draws and discards checks the graveyard, meaning the front face converts once it has survived a turn to tap. Once it lands, the -3 turns the graveyard the loot filled into a spellbook, replaying the very burn or removal that fed the transform in the first place, and exiling it rather than looping so the value is bounded. The +1 keeps the walker alive against aggression without ever putting loyalty at risk, and the -9 is closer than it looks because +1 protection and a five-loyalty start mean the ultimate is a matter of survival, not tempo. A planeswalker you cast as a creature, flip for free, and rarely have to defend: the whole card is a study in loyalty efficiency dressed as a fragile blocker.