Lightning Helix versus Lightning Bolt is no contest, of course, but Ral Zarek has one very major advantage over Ajani Vengeant
Balance Its at this point in the list that we get to some of the more heinous cards you can Wish for with Spike, Tournament Grinder (while staying within a reasonable budget)
That card has seen occasional play (and even got banned out of Standard when it was juiced up as Attune with Aether) and this giving you the option to find a land or proliferate is pretty sweet
P/T Number 139 Language English Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Standard, Timeless, Vintage Rulings (6/6/2025) You can't use the reflexive triggered ability to try to attach an Equipment to a creature if that Equipment can't legally be attached to that creature
Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to a creature may become lethal if Eye of Nidhogg becomes attached to it or unattached from it during that turn