Phyrexian Reaper
{4}{B}
Creature -- Phyrexian Zombie
3/3
Whenever ~this~ becomes blocked by a green creature, destroy that creature. It can't be regenerated.
Phyrexian Slayer
{3}{B}
Creature -- Phyrexian Minion
2/2
Flying
Whenever ~this~ becomes blocked by a white creature, destroy that creature. It can't be regenerated.