1st off lol
2nd off you cant di a throw up.
3rd off ive been on smashboards for a long time
4th off you can either grab again, dash attack, usmash, aerial, or tilt a marth after grab, depending on percents. at 0 is when you have hte most options. i consider that a combo.
wow, did you ignore my entire post?
you really don't know anything, do you?
Sheik CAN'T usmash if the marth di's correctly. The only thing sheik can do off of a dthrow is Dthrow-->tilt (then no aerial because marth di's correctly) or Dthrow --> aerial (the best option vs anyone good).
Yes, that's a combo but not a 0-death combo like u say there are.
You should NEVER get upsmashed or regrabbed as Marth vs sheik from a dthrow.
You also should never get hit by multiple consecutive moves from a dthrow.
Seriously, learn to DI. You offer no credibility as to who you are or that you have any experience. Maybe that's because you're a nobody. Play m2k/azen's/km's Marth's consistently and you'll see that stuff is easily DI'able.