This seems a tad bit too powerful especially for it's cost. If Earthquake costs this much and only removes 3 pillars, Paradigm Shift should cost maybe 4-5
.
Also consider that when Earthquake is pulled off early it can really do some damage, but pillars can continue to be played. If Paradigm Shift is played early, this means many decks are ruined for the first 3 turns. In the unupgraded environment this can be equivalent to 1/3 - 1/4 the match, and you can pack 6 of these in your deck. In the upgraded environment it could mean 1/2 the match.
Good concept though. Keep it up Solarias.