Whenever an opponent casts a spell, that player creates a Blood token. (It’s an artifact with “{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.”)
Whenever Bloodvial Purveyor attacks, it gets +1/+0 until end of turn for each Blood token defending player controls.
NM-Mint Foil - $1.10
Lightly Played Foil - $1.10
Moderately Played Foil - $1.00
Heavily Played Foil - $0.90
Damaged Foil - $0.70
NM-Mint Foil Non English - $1.10
Lightly Played Foil Non English - $1.10
Moderately Played Foil Non English - $1.00
Heavily Played Foil Non English - $0.90
Damaged Foil Non English - $0.70