So with the update the blues return a card to hand cards are now fairly useless. Before if who you where playing against was at max hand size the creature was destroyed, and i can semi- see this as a bit powerful in the puzzle quest context (though a very common and cheap effect in mtg). However, the fix of requiring your opponents hand to be less than five makes these effects only work for the first few turns, as i have never played against someone who's hand dies not fill up commonly, particularly computer players. Generally at this point i plan to take all these cards out of my deck, as they are now extremely situation, and as a blue player i know have little recourse for creature removal
I won the last myyhic round and i run two bounce cards in my deck...