The spell stack is where Fast and Slow spells resolve. Spells resolve from top to bottom (last in, first out). Understanding this order is vital for counterplay. For example, if your opponent casts a buff spell on their unit, you can respond with a removal spell to kill the unit before the buff resolves. Conversely, if you cast a removal spell, your opponent might respond with a protection spell. Always consider what your opponent can play in response and how the stack will resolve. This is where many games are won or lost.
