Jackfrost, Horrorween

Flash
Whenever Jackfrost enters the battlefield, it taps,
then if you control another Horrorween creature
you receive no damage for the rest of the turn.
When an opponent declares an attack and all creatures you control are tapped you can play
this card ignoring its mana cost.
{t}: Scry 1.
Opponent players can target Jackfrost directly in
combat phase, unless Jackfrost is tapped.