I like the general idea here.
I have a couple questions though. Is the random pillar on your side, your opponents, or both, and if it does target your opponents pillar, do they get a time pillar or you.
I assume it can affect either side of the field and the owner keeps the card. This would give time a 50% chance to disrupt your opponents quanta flow; a 100% chance if you have a mono time deck.