Honestly, tho, having an universal tutor sounds me unhealthy as hell, even if you share this trait with your foe. As you say this is an counter to combo decks i can see it being used so that mantra Shidai simply laughs at your face by instantly enacting his combo and breaking your artifact before you can act on it instead. The only other way of something of the like being feasible without sharing the effect would be to sacrifice consistency.
@anjosustrakr i kinda have to agree, i went for maximum flair on the theme of deck interaction. Gotta readjust price tags and numbers so it may be truly a songhai card: utter jank. =w=