This is known simply as card draw, and can be achieved through specific action effects or ongoing abilities of certain characters and items
A -2 is a small price to pay for guaranteed creature or planeswalker removal, and the ultimate option has plenty of potential to get silly powerful
Green Commons Greens lagging a bit on Marvel SpiderMan MTG cards, but Spider-Rex might be the spiritual successor to Colossal Dreadmaw
An EX Unlimited Tropical Island
You have base cards, alternate arts, special arts, and manga rares, but they all correspond to the same base card
Players may have to open up quite a few packs though, as Darkrai is currently one of the rarest collectibles to find in the Autumn goody bag