You can tap any three untapped Zombies you control, including ones you havent controlled continuously since the beginning of your most recent turn, to pay the cost of Cryptbreakers second activated ability
As a rule of thumb, if an effect instructs a player to look at or reveal a card before it's put into its owner's graveyard, it's unlikely to have received errata
Here is the process that works
There are a plethora of cards with an F regulation, as every V and VStar, every Radiant Pokmon, and a slew of other cards will no longer be legal for standard play
He's going to be a fantastic commander or a strong finisher in many decks
#2 Boromir, Warden of the Tower Boromir, Warden of the Tower Universes Beyond: The Lord of the Rings: Tales of Middle-earth, Rare Boromir, Warden of the Tower is a three-mana white, 3/3 with vigilance that automatically counters any spell an opponent casts if no mana was spent to cast it, which can be a lovely bit of interruption