Siphon - Puts a debuff that drains hp/mp from the target, scales with dark magic.
Should be "Sap". XD One of the only things I support in the "Give DRK better magic" category, with the other few being along the lines of Absorb-Haste (gives a second "slow" type effect to the monster's melee and an attack delay reduction to the DRK independent of job ability haste).

I don't see why you bash the job so much if you like it. There is a reason serious zerg groups wanted DRK, and it's not because we could lol the mob to death with crappy magic. Abyssea is broken. We only need trigger and crit jobs!

(btw Covenant means that it's very difficult to drain the mob completely of MP... I think. Which it is. Seen a Kirin go on casting for more than 5hrs before it finally ceased to cast. lolHibayshu!)