Growth Watchtower enters the battlefield tapped.
, Pay 1 life: Add or to your mana pool.
, , Sacrifice Growth Watchtower: Draw a card.
Cycling (, Discard this card: Draw a card.)
, Pay 1 life: Add 
or 
to your mana pool.
, , Sacrifice Growth Watchtower: Draw a card.
(, Discard this card: Draw a card.)
