This is a very powerful card. 6 out of 5 cards! Remove a card until the controllers next turn for nothing is very strong. If the removed card is locked it will return locked. It is always a good choice to put Keb into your deck only to play this card.
This is my favorite card thus far. seeing how resources is the bread and butter of this game, and having a creature that can give you +3 of it in a blink of an eye, with a small cost of capital, makes him a very valuable part in any deck. I highly recommend to add him in any deck format