You don't have to decide whether or not to draw a card until after the player decides whether or not to pay.
01-09-2023
wotc
Rhystic Study's triggered ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered. The player gets the option to pay when this triggered ability resolves.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.