In multiplayer (or solo with Adam Warlock or Spider-woman), you may attach this to Live) Dangerously so that essentially everybody gains +1 hand size for a total cost of 2ER. This seems really very strong.
Condition.
Attach to a card. Attached card loses each , , , and icon.
Forced Response: At the end of the round, each player may spend 1 resource of any type. If any player does not, discard this card.
You pay every turn 1 resource for loses icon? In theory this is bad. But sometimes you want to pay this tax to avoid bigger threats. I'm really interesting how it works in GMW campaign, where there are campaign cards with more icons (especially on expert)
Rating (A-C) C+ don't put in random deck, specific for scenario
I can see this being considered in a protection archangel deck (especially if that deck is packing symbiote suit). This essentially becomes trading 1 resource to cancel the acceleration icon on archangel.
Might try a Symbiote Suit build with this, granted in SOLO the extra hand draw from it can be allocated for the resource requirement each round. But in multi-player it may be too demanding for other people to pay a resource just for your singular benefit
This card actually is very useful in a specific deck where you can get it out at the same time as Live Dangerously. You actually all get a benefit of one extra card draw each turn even accounting for the other card would have to be spent keeping Mitigated Threat on the board. This is surprisingly, a positive trade with no drawbacks. This is especially good with Cable who can choose which side scheme he wants to start the game with. The only problem with this is then Cable also cannot put another player side scheme out. Potentially if you play 2-player and both run Symbiote Suit, and then someone runs a pool deck you can bring all 3 copies of Mitigated Threat with something for each of them to be attached to. Overall, this card at least has some hope of seeing play in a few very niche decks. Outside of this I do not see it ever being worth playing outside of incredibly niche situations. I believe It was intended for villain related schemes/minions but this use is so niche. Technically could also again be used with some pool minions but I once again don't see it providing enough value here maybe Pandapool with Adam Warlock could find value???? I am waiting for someone to do that!