#19: Archangel Avacyn While Archangel Avacyn being so recent may obfuscate just how crazy strong of a card she is, let me assure you, she would dominate in many, many eras
Zero to Hero works best when a players board is already filled with characters, allowing them to play a high cost character for free, especially as songs can be played for no ink simply by exerting a character with the same cost or higher
Thopter Foundry Sword of the Meek is one of the better combo decks in the cube but it does demand a fair number of niche support cards such as Time Sieve, Second Sunrise, Ichor Wellspring and the like making it something I generally leave out of the A cube
For two ink The Bare Necessities allows you to peek at an opponent's entire hand, which even by itself is a fantastic ability thats currently only available to sapphire players through Nothing To Hide
Once per turn, you can pay the associated cost to activate the item and reap its benefits
It took a little time for people to realize just how good this card was, but once they did, the card exploded in price