Reality Rift pulls all your illusions onto the target, so rift before Phantasm and the clones spawn right on the kill.

Phantasm illusions deal full damage with Aghanim's Scepter, making it a massive teamfight damage spike.

Kill supports whenever they overstep, Reality Rift plus stun converts the mistake fast.

Build Armlet into Echo Sabre for the midgame spike, then BKB before carries get cores.

Use illusions to scout high ground and gank spots before committing your team.

Pivot into objectives after winning a fight, Phantasm melts towers and Roshan quickly.