How exactly does the cascade ability work in magic?

Question

it says "When you play this spell remove cards from the top of your library until you remove a nonland card that cost less. You may pay it w/o paying its mana cost. put the removed cards at the bottom of the library" when it says when you play this spell remove cards from the top of your library until you remove a nonland card that cost LESS. Less then what?

Answer 1

When you cast a spell with Cascade, the Cascade effect goes on the stack immediately after the spell. When the Cascade effect resolves, you reveal cards one by one from the top of your library until you reveal a non-land card with a converted mana cost less than the converted mana cost of the spell that triggered the Cascade effect. You may (but do not have to) cast that spell without paying the mana cost. All cards revealed this way that are not cast are put on the bottom of your library.



Example:

You cast Bloodbraid Elf. It goes on the stack, and then the Cascade effect goes on the stack.

When the Cascade resolves, you reveal the top card, which ends up being a Forest. Cascade says it must be a non-land, so you reveal the next card on your library, which is Primeval Titan. Primeval Titan's CMC is higher than Bloodbraid Elf, so it cannot be cast via Cascade. You reveal the next card on your library, which is Flame Slash. It's CMC is less than Bloodbraid Elf and it is a non-land, so you may play it. The Forest and Primeval Titan (and Flame Slash, if you choose not to cast it or cannot cast it) go onto the bottom of your library.

Answer 2

It means that you play the spell if it has less mana cost than the original spell that you are playing with cascade. Say you play Bloodbraid Elf (4 mana cost creature with cascade) and you reveal Lanowar Elves, you get to play that card without paying its mana cost. Now if you didnt want to play that spell at the time (an enchantment, sorcery, instant, etc) you would have to put it on the bottom of your library.

Answer 3

Less than the cost of the original spell. For example, if you play deny reality you reveal until you get to a card that costs 4, 3, 2, 1, or has no cost.

Answer 4

less than cascade costs

Answer 5

than the card which has cascade