I had a similar issue in my eventually-successful replay of an older OblivAeon game, “The Source of Foes”, which revolves around killing very specific numbers of Aeon Men to break the shield; Fanatic was charging up End of Days to blow all the Aeon Men up, but she was in Zone 2, and the zone 1 Scions played that card, pulling them all alway and leaving her to blow up her buddy The Every Man for no benefit.
Aeon Assault doesn’t always do a lot of damage, but the movement mechanics in OA games are one of their weak points, since almost nothing that the heroes can do can deal with unexpected movements. It makes me quite sad that Tactics fizzled out, as while it wasn’t overall a great game, it did have movement-based mechanics that don’t feature in SOTM, and while it’s flavorfully inappropriate for OblivAeon to appear in Tactics, it would nonetheless be interesting to use the Tactics mechanics to represent Blivs and his minions spacewarping each other AND the heroes around the battlefield, while the heroes scramble to get back into position for effective attacks.