Memory Deluge

Sep 24, 2021 · To determine the total cost of a spell, start with the mana cost or alternative cost (such as a flashback cost) you're paying, add any cost increases, then apply any cost reductions. The mana value of the spell is determined only by its mana cost, no matter what the total cost to cast the spell was.

Sep 24, 2021 · If an effect allows you to cast Memory Deluge without paying its mana cost, X will be 0. Memory Deluge will resolve, but you won't do anything.

Sep 24, 2021 · If an effect requires you to pay some amount of mana to prevent Memory Deluge from being countered, as Flip the Switch does, that mana wasn't spent to cast Memory Deluge and will not be taken into account.

Sep 24, 2021 · If a card with flashback is put into your graveyard during your turn, you can cast it if it's legal to do so before any other player can take any actions.

Sep 24, 2021 · A spell cast using flashback will always be exiled afterward, whether it resolves, is countered, or leaves the stack in some other way.

Sep 24, 2021 · Memory Deluge cares about the mana you actually paid to cast it, not its mana cost. If you cast Memory Deluge for {2}{U}{U}, you will look at four cards. If you cast it with flashback for {5}{U}{U}, you will look at seven cards. Any effects that increase or decrease the cost to cast it will also be taken into account.

Sep 24, 2021 · "Flashback [cost]" means "You may cast this card from your graveyard by paying [cost] rather than paying its mana cost" and "If the flashback cost was paid, exile this card instead of putting it anywhere else any time it would leave the stack."