Currently, immaterial creatures can only be affected by shield effects and Shard of Wisdom.
I'm worried about the impact of this toward aether. Right now, immaterial is one of its primary mainstay features… as annoying as that may be… This card will significantly impact that feature, almost bordering on "elemental hate".
At the very least, I think it should require a quanta investment to enable the capability.
Making it cost a little
would also help provide a thematic tie as to how this card can strike something that is not physically present (hence the "immaterial" theme associated with aether's untargettable mechanic)
E.g. " May only attack enemy creatures, chosen at random.
phase: may strike an immaterial creature this turn."
(note that using phase would not guarantee it doing so, just enable it to be an option)
or
, or maybe
, could possibly be used instead of
there... but you would need to imply a thematic tie in somehow.
That aside, I think adding in more means of creature attack interactions would help enliven the games strategy a bit... Though giving
this type of hard CC will definitely impact balancing of the element in metagame... that may be a good thing or a bad thing... I'd have to deffer to more experienced PvPers there.