Reborn says “resummon with 1 health” not resummon as dormant with full health…
If nothing else, they should at least go dormant as a 5/1.
Ancient of yore in warlock when combo’d is “Draw 6 cards, gain 30 armor, summon 3 5/5s” that’s an insane amount of value on an interaction i do not believe was intended to function the way it currently does.