Only creatures controlled by a battle's protector can block creatures that are attacking that battle
Liliana's Mastery is a fast way to punch through your opponent's defenses, and Liliana, Death's Majesty is a must-answer planeswalker
Lord Skitter, Sewer King On first glance, it would be easy to dismiss the Rat Noble due to its pretty fair stats but Lord Skitter, Sewer King is the only legendary creature from the set to break into the powerful Esper Legends deck, including two copies in Jean-emmanuel Depraz Worlds winning deck, meaning the rodent lord needs a lot of respect
Trapped in the Tower 1W Enchantment Aura Enchant creature without flying Enchanted creature can't attack or block, and its activated abilities can't be activated
Then you come to the good stuff, if Carmen returned only creatures of power 2 or less upon attacking it would still be great