Hollow, Arrow of Phyrexia

Reach and Infect
During the beginning of your precombat step, choose one:
• Phyrexian creatures you control gain Infect and +2/+2 or
• Pay 3 life, then you may play a land from your hand or graveyard.
Whenever a Phyrexian creature you control attacks or blocks a creature, you may pay 1 life then that creature gets +2/+2 until the end of combat.