(Howltooth Coppice isn't a spell.)
Howltooth Coppice enters the battlefield tapped unless you reveal a planeswalker card from your hand.
, : Scry 2.
: Add or to your mana pool.
: Add to your mana pool. Put Howltooth Coppice on top of your library.
, 
: Scry 2.: Add 
or 
to your mana pool.: Add 
to your mana pool. Put Howltooth Coppice on top of your library.
