Hessen Guard Tower

Add two mana of any color to your mana pool.
(If card is destroyed you still keep your two mana)
{1}{t}to turn into 2/6 creature wall
(can block flying creature)
{1}{t} Regenerate
(If card is destroyed draw a card and
opponent discard a card)
(Hessen Guard Tower can't come back into play
if destroyed)