Lenny, Pillar of Necromancy

As long as Lenny, Pillar of Necromancy is in play
you may play zombie and skeleton cards from your graveyard but it costs {1} extra when played this way

{2}{u}{b}{t}: Put target creature from any graveyard
on the battlefield under your control, is is a zombie
in addition to it's other types

{3}{u}{b}: Gain Regenerate until end of turn