Nowi vs Reinhart vs Nino

Reinhardt has the best IV from this 3 and you have already with him death blow3 he alone kills always 1hero. Nino would be fine too but then you need buffs to make her value.

Do the Reinhardt 5*, my Reinhardt isnt even +atk and hasnt Death Blow 3 yet and even tho he kills everything that isnt green. and with your perfect Ivs and Deathblow 3 he will just wipe out everything with a special up. in your situation i would give him Draconic aura, he really benefits from the pretty short cd and the 30% of attack as direct damage is a god's blessing, because it even stacks with death blow