Breathkeeper Seraph

Soulbond was built as a fragile keyword: the shared bonus evaporates the instant either partner leaves, so most of the cycle handed out static buffs that traded away with the body carrying them. This one inverts the risk. Rather than a stat boost you lose to a removal spell, both paired creatures gain a delayed reanimation clause, so a single-target kill spell aimed at either half buys the opponent nothing but a turn of tempo: the dead creature returns at your next upkeep, and if the Seraph itself is what died, the pairing simply re-forms with whatever survivor is still on the board. Because the ability is granted to each creature independently, a board wipe that catches the pair together triggers both returns at once, and even a wipe cast after one has already fallen still hands the first creature its delayed comeback. The real crack in the insurance is the gap between death and upkeep, where the returning creature sits in the graveyard exposed to exile effects and graveyard hate rather than to further sweepers. Pairing the 4/4 flier with a creature that carries an expensive or dangerous death trigger turns a liability into a two-for-one, which is why the effect reads far stronger in a sacrifice-oriented shell than its printed rate suggests. It sits in white's protective-recursion lineage, the tradition that asks you to invest in a body worth bringing back, and soulbond is the wrapper that lets it extend that protection to a partner it was never built alongside.