For a single black mana and 2 life, you can look at your opponents hand and pick any nonland card for them to discard
Greater Good can be one of the strongest card advantage engines in the game
Enchantment - Aura Cartouche Color tag templates(None) Cartouche of Knowledge Enchant creature you control When this Aura enters, draw a card
(Bevy of Beebles) Backslide Bag Check Baleful Stare Ballad of the Black Flag Bane's Contingency Baral, Chief of Compliance Barrin, Tolarian Archmage Baxter, Fly in the Ointment Bearer of Overwhelming Truths Befuddle Behold the Multiverse Bellowing Crier Benthic Biomancer Benthic Criminologists Bespoke Battlewagon Betrayal Bewilder Bident of Thassa Birthday Escape Bitter Chill Blinding Spray Blink of an Eye Blitzball Stadium
However, your opponents can still win the game if an effect says so, such as with the ability of Wowzer, the Aspirational
How do you use them in your Commander decks