I use this spread commonly:
Choice Scarf
4 Hp / 252 Atk / 252 Spe
Adamant
-Trick
-Pursuit
-Low Kick
-ESpeed
This destroys most leads. If Deoxys (S/A) sets up, Pursuit it on the switch for the KO! Darkrai and Dialga have a high chance of OHKO with Low Kick, and deals massive damage to Kyogre...