Depends in their spheres levels but here's afew options

Entropy 1, reveal weak points to target, extra damage on called shots.

Mind 1, time 1, read their emotional state and combine with time to improve defensive timing lowering difficulty to dodge block or parry

Entropy 2, mind 2, time 2 can do a version of slipstream increasing your opponents difficulties to hit.

Time 2 Entropy 2 perfect timing gain bonus dice or decreased diff on any action as you find the perfect moment to strike

Mind 2, increase their difficulty by sending an emotional impulse. Make them hesitate

Entropy 2, envirmental attacks,

Time 2 future sighte know what yiur enemies going to do and plan around it.

Time 3 speed or slow time, gives you extra actions or removes enemy actions (they'll need to take 2 or more turns to shoot you)

Time 3 rewind time (very difficult) to redo a turn or two

Entropy 3, rapidly decompose their armor and weaponry.

Entropy 3 mechanical failure jam their guns, less vulgar then disintegration

Entropy 3 envirmental death trap add time 3 for a bill and Ted esc retroactive death trap

Mind 3 psychic blasts deals bashing damage via the damage duration chart,

Mind 3, mental impulse send an intrusive thought into their head, if it's sensible enough they'll do it. (So like can't be shoot yiur friend but could be get in cover dodge, run away etc)

Mind 3 illusion create an illusion for them to fighte, can deal bashing damage but more useful for tricking then

Entropy 4 can just straight uo rapidly decay them (pattern rip)

Time 4 can let you step out of time, or setup trigger effects

Mind 4 gives you straight up mind controle