Dragonbone Reach

Dragonbone Reach enters the battlefield tapped
unless a creature with power or toughness of 4 or greater was put into a graveyard this turn.
{t}: Add {c}, {u}, {b}, or {r}
{b/r}{t}: Target Dragon gains haste until end of turn.
{u/b}{b}{b/r}: Dragonbone Reach becomes a 3/4 black
zombie dragon creature with Flying and Undying
until end of turn.