It will resolve even if the spell that caused it to trigger is countered or has otherwise left the stack
Ultimately, this is where I feel like original set foils have the most in common with the Reserved List
NM-LP 4 In Stock Victini V - 025/202 - Ultra Rare Sword & Shield Base Set The Card Nest Exclusive - NM 1 In Stock The Card Nest Exclusive - NM 1 In Stock The Card Nest Exclusive - NM 1 In Stock Ordinary Rod - 171/202 - Uncommon Sword & Shield Base Set Varied Condition
Mostly, youre going to try to run up to that ultimate, which may somewhat tricky to kill people with in Commander
While it doesnt contain any busted combos, the value and synergy it offers is very powerful
My guess is that this setup will come online really easily, and that each time you get back even something as innocuous as a Fleshbag Marauder or a Corpse Augur youre going to feel good about it, and there are often going to be a lot of other great targets too