Chthonian Nightmare enters the battlefield, it triggers, giving you ({E} magic symbol) ({E} magic symbol) ({E} magic symbol) .
Activate
Chthonian Nightmare by paying ({E} magic symbol) ({E} magic symbol) ({E} magic symbol) ({E} magic symbol) ({E} magic symbol) , sacrificing a nontoken creature with mana value 1 or less and returning
Chthonian Nightmare from the battlefield to your hand, returning
Peregrine Drake from your graveyard to the battlefield.
When
Peregrine Drake enters the battlefield, it triggers, untapping up to five lands.