Forum:Control vs Once effects

My opponent uses the effect of a "Once per turn" monster (Shooting Quasar Dragon). I take control of it. Can I use Quasar's effect on the same turn? My opponent uses Armored Kappa's discard effect. In the same battle phase, I take Kappa. Can I use its discard effect? Thechosenone124 (talk • contribs) 08:08, June 13, 2016 (UTC)