This one only requires two cards: Vedalken Mastermind and Oblivion Ring. Play the Master on T2 or 3. Once you have four lands, play the O-Ring, with its CIP effect on the stack, tap your 4th land and the Master to bounce the O-Ring back into your hand. The whole thing resolves in reverse: O-Ring goes back in your hand, then state-based effects look to see that there is no card removed from play so nothing comes back in play, then O-Rings CIP effect goes off, removing your target from the game and it will never get brought back. You still have your O-Ring so you can do it again next turn.
It's all about the way the card is worded with two separate clauses being put on the stack
I really like kor skyfisher, at 2 mana it's aggressively costed, is above the 2 toughness threshold (which is a big deal in zen), has early evasion and allows for a lot of neat tricks with landfall/kicker