"Based on (Attribute)" Telekinesis

[Varyon]

I'm currently working on a revamp of my wand-based magic system, and one of the things I wanted to include was the ability to use the magic for telekinesis. My question for this is simple - is there a fair way to, rather than buying the full amount of Telekinesis, have it so that it's based on an attribute (for that system, it would be Quintessence - QN - but IQ, Per, or Will could also make sense - heck, I could see basing it on ST in some cases)? This would be roughly akin to the ST-based Enhancement on Innate Attack - or more appropriately the Natural Weapons from Pyramid #3/65. So, rather than having ST equal to the level of TK you've purchased, you'd have ST equal to (or at least based on) the relevant Attribute (in this case, QN).