i gave up on adding warlocks sash and ethereal staff to my builds. especially in fast games like arena and joust. u cant build stacks fast enough to make it worth while, what i do now is add life steal, and extra damage on normal hits based on my magic power. with poseidon works really well cause the second skill already adds magic dmg to 3/4 normal hits, so im hitting 500+ from wave, like 300/400 normal hits and also that huge damage from the Kraken ultimate, and 100+ ticks on my whirlpool. and everything gets me life. my hp isnt so good but the damage output and regen is amazing