Whenever you attack, choose odd or even. Creatures with mana value of that quality can't block this turn. Each other colorless creature you control has bloodthirst 2.
NM-Mint - $0.50
Lightly Played - $0.40
Moderately Played - $0.40
Heavily Played - $0.40
Damaged - $0.30
NM-Mint Non English - $0.50
Lightly Played Non English - $0.40
Moderately Played Non English - $0.40
Heavily Played Non English - $0.40
Damaged Non English - $0.30