Zap is incredibly versatile. Use it to reset an Inferno Tower's damage, stun a charging Prince, or clear out Skeleton Army/Goblins. Poison is best used on pushes where multiple troops are grouped, or to slowly chip away at a tower while also damaging defending troops. Don't just throw spells blindly; wait for optimal value. The Mirror allows you to play your last card again for +1 Elixir, offering surprising offensive or defensive plays, but requires careful thought to avoid Elixir disadvantage.
