Omniscience and X mana cost
Asked by swkelly89 9 years ago
i know the X in the mana cost of spells is 0, but when i cast Blue Sun's Zenith and i have Omniscience out, would i just declare X as say 3 and just pay 3 mana for the value of X?
billpasdmf says... #3
And BTW, you should always check Gatherer before asking a question here. A lot of the answers can be found over there.
7/1/2012 If the card has X in its mana cost, you must choose 0 as its value.
December 6, 2014 7:10 p.m.
Epochalyptik says... #4
You answered your own question. X is 0. That's it.
December 6, 2014 7:25 p.m.
so casting blue sun's is pointless if omniscience is out?
December 6, 2014 7:25 p.m.
Epochalyptik says... Accepted answer #6
Not wholly.
Omniscience's ability creates an optional alternate casting cost for spells. You can still pay their mama costs if you want, but you can't choose to pay 
and not the rest of the cost. You get one or the other.
billpasdmf says... #1
No. Whenever you may pay an X spell without paying its mana cost, X is always 0.
December 6, 2014 7:08 p.m.