On its own, this is like an infinite Cellar that doesn't reduce handsize.
Hand is XDDDT (Any Card, Dead cards, Training camp).
Play Training Camp for +actions, discard Dead cards.
Play Training Camp for +cards.
Hand is XXXDT.
Repeat as often as you want until you have your four card combo in hand. Since you have to discard two at a time, it might take some effort, but you can repeat forever until shuffle luck works out.
It gets even better if you have Smithy or another draw card because you can increase your hand size and still continue the chain.
If it was just "+1 Card" instead it might work... but then it might be too similar to Cellar, though in a rather unique package.