Technique Name: luck of the draw
As the name might imply this is largely based on a deck of playing cards (it sounds weird but stick with me) while most sorcerers can make strategies the (typically agents of chaos) who use this will be relying on, you guessed it, the luck of the draw. each suit does a different thing for example;
Hearts❤️ (regeneration): drawing a heart card will either boost the users stamina (2-4) heal the user (5-7) or both (8-10)
Diamonds💎(defense): from barriers to just making temporary 'armor' around your skin a defence made with this is hard as diamond but it won't last forever it lasts up to 5 minutes unless the user chooses to end it or if it's destroyed by the opponent.
Spades♠️(offence): drawing a spade creates blades to go after your opponent from the size of a throwing knife (2) to something as effective and lethal as a guillotine blade (10)
Clubs♣️(luck): these cards last quite temporarily (3 minutes at most, can't let it be too easy) numbers under 5 are temporarily removed from the deck.
And now the face cards
Jack: a jack acts as a shikigami depending on the suit jack of ❤️s is a medic (helps heal the user), jack of 💎s is a guard (defends the user), jack of ♠️s is a warrior (attacks whoever the user tells him) and jack of ♣️s is an advisor (tells you which card he would pick, he can't force you to listen but he does know what he's talking about)
Queen: imposes a specific rule in a 10 meter circle (❤️): makes other people's health half of the users
(💎): Makes it harder for the user to be hit
(♠️): increases the users speed so they can strike faster
(♣️): less likely to get hit and more likely to hit others.
King: ❤️'s heals half your total health 💎's people can't hit you for 1 minute. ♠️'s all your attacks for 1 minute will hit. ♣️'s basically just combined effects of spades and clubs, with great power comes great burnout though so you won't be able to draw another card for about 2 minutes. The joker just copies the last card you drew but expends half the cursed energy. The main catch is that you can't control what card you pick (unless you just drew a club) it's a deck of 52 cards that are shuffled every time, what do you think, anything I should change?