The two people I play most are my roommate, and another friend. My roommate uses Sent/Strider/Doom and scrub when he’s bored. The other guy uses Sent/Storm/Cap. Please believe me when I say I play this matchup a LOT. Oh yea, this is with MSP.
From what I see, MSP fights Sent/Strider/Doom are either: Snap to Doom and win/easier fight, or slow(and i mean slow) death to Sent/Doom and Strider/Doom. Very careful fight for MSP; conservative and patient. I’d much rather have Storm out vs. Strider, or at least exploit mistake/counter assist xx Tempest to instant Hailstorm. Sooner the better, because Mags is usually hurting from fighting Sent at that point. Mags can’t run from an orbed Strider as well as Storm or Sent(nice, Sin vs. Clock vid at denjin). Well, mine can’t. Yet.
I also find that Strider starts orbs at full screen with Doom in my face, so Psy doesn’t end up being as usefull as Storm proj. assist(gotta anticipate and call relatively early, though). Against gay Sent/Doom fly chip lockdown strings, Psy’s the one to go to.
Against Sent/Storm/Cap, I usually win big or lose big. Snap to Cap, as everyone knows. Avoiding point Sent calling Cap with Mags isn’t exactly THAT hard, either. Ask Mixup or Soo. However, unblockable, fast flys, assist punishing, and 100% DHC make this careful, too. There’s the sj, ad forward, Hp, Hk, as well as other stuff, but this team fucking hurts. If you happen to know if Sent has no unfly, exploit when he does fly with Tempest to instant Hailstorm, too. Then you can charge/run/zone till 3 bars, land a hit on whoever’s out, and Lightning Storm to Butterflies to Tempest/Shockwave. Mag proj. helps to ground their Hail chip attempts when it’s Storm vs. Storm, but make sure they’re far, or Cap will punish. Sucks, because sometimes assist takes the hit(God save the Queen!) and their Hail hits first on you and the jew.