What’s the coolest thing you’ve done with a Collection while playing a Definitive Edition event?
I just used Dark Twistings (collected from the Wayward Sun event) to have Fanatic activate the power on Absolution, at 3 HP, with Anoint Allies in play.
3+3+1
2+3+1
2+3+1
= 19 total damage!
We’ve never used one, but we have always brought the “villain deals themselves a silly amount of damage” one just in case.
Had the villain deal themselves a silly amount of damage, of course! 
I don’t typically use them, but as I was fighting advanced Akash’Mecha, I realized near the end of the fight that I had read the advanced rules wrong… instead of placing 1 card from the environment under her each turn, I had been placing 3!
… Thankfully, I had Fanatic in play. And so I simply used both Collections to get her Aegis back into play twice! So, she effectively prevented 10+ damage hits, three rounds in a row (and healed from them).
Haven’t had a really silly one yet. I wanted a silly one with Voss’s collection and Unity getting three bots out on turn one… but I got a platform bot and two bee bots or something like that, which got killed instantly and didn’t have the impact I wanted.
We used the Omnitron virus yesterday to blow up the Thorathian Fleet, which felt very appropriate.
alien invasion to discover 3 dinos, two of which i knew would need to be raptor packs, to eat the villain.