If youre looking to beat up that one guy who brings in an over-powered Commander deck to the newbies table, adding in an Exquisite Blood creates an infinite damage combo with Sanguine Bond (albeit a 10 mana, 2-card combo, but a combo nonetheless)
But while released alongside the much cheaper Unlimited reprint set, and not Alpha, first edition artist proofs are even more scarce than real Unlimited, Beta, or Alpha cards (or anniversary edition 'non-tournament legal' pieces for that matter)
PTCGO is far from perfect itself, but in my opinion the game looks better, has smoother and more responsive gameplay, and includes more game modes like Events and Expanded
A more competitive build will be towards outright wincons that don't require going to combat, using the Hydra tokens to defend yourself