Ah, right. Still, the only serious (PvP is possible, but you'd have to set it up, and I'm not counting fun duels) in-game possibility when it comes out would be Arena, and including mindgates in an otherwise mono-shard/SoI based deck wouldn't be worth it in effectiveness, so its still practically 6 shards of each, though it is technically possible to have up to 7/8.