I can only imagine how funny it would be in the arena: AI has 6 Silence, 6 Quantum Lock and some draw cards in a SNbow. Each turn you get at least one of them put on you: Space. Space. Space. Space. Space. You lost! Player starting: 3 Towers played. Space. Space. Space. Space. Space. Space. You lost!
But okay, that's just part of the game and maybe not the main source for critics, I know.
Though I think this card is way worse than Silence because besides gaining little quanta by two, or maybe three novas in the same turn (if saved), you can't use your creature's abilities nor play any perms, spells or creatures at all that are not free. Which free cards would that be? Holy flash? Gemfinder? RoL? Shortly said: If you are just depending on Pills/Pends, your choices are very limited -> If silenced, you can still use Destroy/Pulvy/Accretion/Steal (from creatures) or use CC from creature abilities and even produce new creatures with Mitosis, Queen, Pharaoh. Even the Rustler would not be able to produce Life quanta as long as it's not SoRed - and losing most of it's power - even though it's the only one at all being able to produce quanta that can be used in the same turn (only considering creatures).