are mtg promo cards tournament legal Will I be scalded for playing non-tourney gold bordered cards? Is this card's condition tournament

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

Notice the symbols next to the attacks these indicate what a player needs to do or use in order to execute the attack

(4/17/2020) Before shuffling your deck to become your library, you may reveal one card from outside the game to be your companion if your starting deck meets the requirements of the companion ability

You want to attack with Squall alone, then use its damage trigger to recur two permanents (or the same permanent twice, if you can sacrifice it between triggers)