This equipment is actually banned in Modern and Legacy for being too strong
In general, drawing cards tends to be a tempo-negative play: You spend resources to get cards that you may use later, rather than affecting the board right now
More often than not, Charizard cards are worth quite a lot of money
Its first strike and trample combo make it strong in combat, too
I do feel though they may be viable Standard and Extended options, but because of the extraordinary power-level of Extended right now, I think that perhaps there will be too many unfavorable match-ups, especially the modified Elfball, numerous artifact combo decks, and maybe Zoo, but if the deck can be modified to a state where it is a tenable Extended option, that's terrific in my opinion