Currently running a MnM 3e game which an over the top fantasy party is involved with an inter-dimensional invader, and they're finally having to fight against the mastermind creature. So far I have some ideas to keep the fight tough:
>Reaction damage coupled with a Create Bubble Shield power
>Summon Projections that with not be vulnerable to the bruiser that seems to be one punch manning my monsters
>Multiple limb portal grapple attacks
>Creature is attempting to revive another creature as a part of a ritual, very dangerous if they don't take it out
Anything else I should keep in mind? This is a party of 6 since they managed to resuce two of their NPC allies and one of them a very powerful character that they teamed up with (but might turn on them knowing some circumstances coming up).