SpaceX Launchpad

Imprint — When SpaceX Launchpad comes into
play, you may remove a Rocket card in your hand
from the game. (The removed card is imprinted
on this artifact.)
{t}: You may copy the imprinted card and play
the copy without paying its mana cost. That copy
has haste. SpaceX Launchpad doesn't untap
during your next untap step.
100 Starships/year for 20 years? Mars Base Alpha!