When the creature is exiled, it leaves the battlefield, which makes it no longer a valid target for the removal spell
Once a creature equipped with Wrecking Ball Arm has been blocked, changing the blocking creature's power to 2 or less won't cause the creature to become unblocked
Check out the Planeswalker card featuring Lolth, Spider Queen: Lolth, Spider Queen For a five-mana Planeswalker that comes with 4 Loyalty, Lolth is pretty powerful as it gives you card advantage at the cost of 1 life and 0 Loyalty
Playing for keeps in a four-player game is probably a bad bet anyhow
Anzrag, the Quake-Mole (Showcase) (Invisible Ink) A hotly-anticipated new Creature, topping many lists of best Commander in the set, including our own
If you can remove the Meliras or Birthing Pods from the deck and still stand a decent shot at winning, your deck is probably built correctly