(Madblind Watchtower isn't a spell.)
Madblind Watchtower enters the battlefield tapped.
Untapped creatures you control get +0/+1.
: Add or to your mana pool.
: Add to your mana pool. Put Madblind Watchtower on top of your library.
: Add 
or 
to your mana pool.: Add 
to your mana pool. Put Madblind Watchtower on top of your library.
