Cyclops' viability as a counter.(Easter egg)
Cyclops' beam hits upon crit do not trigger Mr Sinister's regeneration. It's a pretty cool Easter egg from the comics where his optic blasts were very effective against Sinister. There are waaaaay better options against sinister, but it's a cool little detail I noticed. Props to Kabam. This along with the havok counter, could give cyclops a bit of utility once he's buffed. Though I dont really expect a cyclops buff soon, there are too many good mutants atm.