Late attacker? It's essentially a scorpion that starts with 1 less attack but less affected by shields. Not very original.
Forest spirit also has growth (and twice the amount of stats gained) for only 1
a turn, about a 2 card + 2
card that starts with better stats and has twice the acceleration.
In other, there is already Shard of Patience that fulfills this role.
In short, this concept isn't very innovative, but that does not necessarily mean that the idea should be scrapped. However many ideas like this have been submitted to the CIA before with varying results, and
especially does not need a creature like this (I can remember at least a few cards with the same concept in
).