Holy Blaze

Split Second (As long as this spell is on the stack,
players can't cast spells or activate abilities that aren't
mana abilities.)
Give target creature you control flying.
It must attack this turn.
If the attack hits a player, creature gains +10/+0
and lifelink until end of turn.
If the attack is blocked, or the creature can't
attack destroy all creatures. They can't be
regenerated.