Im playing Dungeon Decent, Dungeon Map, Immovable Rod, and Fifty Feet of Rope, all of which are pretty good when you shave two mana from their activation costs
Hide on the Ceiling Hide on the Ceiling is flexible, and it works for artifacts and creatures
It defines Modern right out of the gate while giving Commander and Legacy players new toys and valuable reprints
Youll be happy to have Castle Vantress in play later in the game
Vraska the Unseen 2.2 Power 2.5 Support 2.0 Vraska is an odd planeswalker, she fits more into the same ballpark as Chandra Nalaar and Karn Liberated as she rarely pro-actively wins games
Meren's second ability can return creature cards from the graveyard to either the hand or the battlefield, depending on that card's mana cost and the player's experience points