I think this shard is probably too strong, but you do need to make a dedicated deck for it, and there are some pretty hard counters, like reverse time, dimensional shield, gravity shield, etc. For some reason, I can't seem to ever spin this shard in my bonus spins (I have one so far) so I haven't used it yet, and I haven't seen much of it at all by my opponents so far. I'm definitely giving a monoshard deck a try once I get it, though.