Tinkerer's post in Shards was marked as the answer
I think that even guaranteed Shard version cards would just be too slow to be used.
"Ledger of Legerdmain" is a good example of this. It is three turns (so it is slower than the shards), but it is a +2 instead of a +1, and it is also pretty much guaranteed since the card doesn't stay on the field. Ledger can also be used to help out certain banish strategies so there is extra application, but it still isn't used at any competitive level.
Tinkerer's post in I have a old relinquished card! Older than most Pics was marked as the answer
It's a fake. Sorry.