He'll play to Sinister's strengths, and then turn the tables on his opponent.

Source: https://www.cbr.com/marvel-villains-smarter-than-mister-sinister/

Marvel has announced that the event will feature Sinister's team of private assassins, who are all clone-hybrids of the teleporting mutant Nightcrawler.

Source: https://www.cbr.com/marvel-sins-of-sinister-facts-details/

Mister Sinister's status as one of Marvel's most potentially dangerous forces has given his actions in a darker edge.

Source: https://www.cbr.com/x-men-sins-of-sinister-dominion-threat-marvel/