Psion + 2atk + automatic PC + 1 PC required to CC
for Lich
Psion + 2atk + 1 PC required to CC
for Lich + Shard of Sacrifice
I think the Lich + Shard of Sacrifice (0 cost) combo is too cheap for the 6|6 Immaterial Psion.
(However some consider SoSac to be imbalanced. If it is imbalanced its cost might increase later.)
I think the Lich + Shard of Patience (3|1 cost) combo is too cheap for the 6|6 Immaterial Psion.
That may be true, but consider also that you'll lose a precious shard effect this way (in the case of Sacrifice, 2 turns of potential stalling), and is a two card combo. You might have a point in the case of Wisdom, but that probably would be a highly focused deck type and needs even more cards for the added effect. The 'PC' part of the Lich is a one-time feature, unless the Phylactery gets destroyed, then replayed (Steal wouldn't make much of a difference).
Death has much cheaper, faster and more effective ways to defeat an opponent, and its creatures are also tend to cost less than their different elemental counterparts; but also too exposed to a few 'hoser' cards (I think I learned this word from you), like Purify or Holy Light/Flash which is unique in the game. Its main goal would be to hinder - even if only a little - mindless shard playing that tends to be so popular lately; and I doubt that shards will ever get removed from the game, considering how enthusiastic Zanz was about them when he (re)designed the 12 we have now.
That said, what would be your proposal to "balance out" the card?
If it only effected the opponents shards (as funky thematically as that may be) I think this would be a wonderful card.
That wouldn't make sense thematically, like you've said, but basically that should be its main profile.