Counter Blitz and Limit Break, in particular, earned rave reviews for the power of their Commanders and the quality of the cards in the decks, which play strongly out of the box and don't need much tuning (if any) to be competitive
Feast of Succession Feast is a card Ive never not seen do a lot of work
It does something only if it's in a graveyard
They're treated the exact same as any other card in that they sit in your deck waiting to be drawn, have a limit on how many a deck can have and have a mana cost needed to cast them
6 | Echoing Deeps One of the stranger controversies that beset Magic this year was the Stellar Sights bonus sheet
Finally, we round out the list with some fantastic tutoring/multiplayer cards, Godo, Bandit Warlord, Heartless Hidetsugu, and Kazuul, Tyrant of the Cliffs