hegemony card sleeves "Hegemony" Compatible Sleeve Bundle (8801 x 1 + 8810 x 3) DC Deck Builder Mayday Games Hegemony -Standard Compatible

Number 2 is an effect exclusive to Mermail, but it's a pretty powerful effect

Im particularly interested in ones that work at instant speed

You can obtain the Latios (1-Star Shiny rarity) card by opening Fantastical Parade from Fantastical Parade set

Once you get a hold of Dark Magician Girl from either the first Rush Duel box or her own Structure Deck, you can simply build around the skill Magician's Shuffle to grab a Dark Magician or Dark Magician Girl from the deck, then send Dark Magican to the graveyard, thus powering up Dark Magician Girl to 2500 (the Rush version gives her an extra 500 you can only run 1 Dark Magician)