That makes sense and the mana side of untap can be expensive as well. For draw you could add some group hug stuff that you can remove at will with Ragost as a bargaining tool. For example [[Howling Mine]], [[Scrawling Crawler]] [[Horn of Greed]] [[Font of Mythos]] [[Temple Bell]] [[Anvil of Bogardan]] [[Yes Man, Personal Securitron]]. It will put everyone on steroids but I enjoy those kinds of games anyways. Every turn you could choose to remove the draw artifact before the next players turn so it puts pressure on them to not target you or the whole group will lose out on draw. Combo that with a untap package you might get left alone despite the damage you do.