I can help you out if you want. Give you ideas and you can make the actual card.

Not good at all, but you get the idea.


Heroes

Dusty: Delay an enemy card's movement for 2 turns

Albus: Heal a card by 1.5 hp

Coco: Paint a card of 0.5 hp & attack onto the battlefield


Knights/Baddies

Sarah: Add +2 attack towards any card

Brett: Destroy any card from opponent's hand

Clops: Aggro all enemies, until death

Crono: Select a target and add a layer of +2 defense


Spells

Chicken: Make any card run back to it's deck