Quote from Karshtakavaar »I'd also have a look at other reasons Storm wasn't working before adding another card that only works in one specific deck - lack of redundancy in other areas (More tutors? Rituals? Ways to cast from the gy? Card selection? Anything else that goes in more than just Storm) or overabundance of other things that beat the deck.
I agree. I think win conditions are the lowest priority on what storm needs to function well. For example, if your storm decks are able to generate infinite mana, Fireball-effects also become a possible storm wincon. I'm also reminded of the draft Gaby and LSV had where their storm deck won with Siege-Gang Commander and Corpse Dance. Several times I've tried drafting storm on the MTGO cube, I ended up with only Draw 7s + Narset/Leovold, and that interaction was strong enough to not need Tendrils. I've also drafted storm/sneak attack hybrids where the deck used Mind's Desire to cast Eldrazi. Generally, if everything else is working, the storm drafter can find a way to win, even if none of the cards in the deck have the Storm keyword.