You can have more, but I recommend sticking as close to 40 cards as possible while aiming for a ratio of 24 playable cards to 16 lands, adjusting for your curve as you see fit
Sized for standard size trading cards
While we used to get ramp like this in the days of Wood Elves and Farhaven Elf, we havent for a while, so thats exciting in itself
Spells like Opt and Behold the Multiverse are popular for scrying and immediate card draw at instant speed
However, it is important to note that the actual pull rates may vary slightly from these percentages
I've won on turn 3 several times by casting Emy, because I had the ramp AND card types in the grave, to totally control the game state, mess everyones else up, and then just smash face