Highly spam-able character within Spell Flux range for more magic damage. Otherwise hit the enemy with Rune Prison + Spell Flux + Overload if range allows. For ranged enemies rush in with a heal from Rod of Ages if possible to get within spamming distance and combo with Rune Prison (ex. vs. Ziggs)(Ghost/Flash/activate Desperate Power for run speed). You might want to build the staff first (for Dominion game mode only since income is quick) without boots or armor to get it completed sooner (more damage and health). For Summoner's Rift: You'll want the Mana regen buff (blue aura) if possible.