Idea passes for the Crucible, but is 'Shift' a passive or an active ability? If it's the former, this + Mitosis with Quint to guard it makes it practically fodder for CC, while giving you near invulnerability without the use of a easily destroyed shield.
You should definitely lower the cost though in my opinion... Dimensional Shield is 6
for 3 turns of invulnerability, but this costs 8 (I get that 3 ATK adds the 3
quanta onto the cost), which is pretty expensive to use. Just an idea though.