I thought this would come up lol. Basically, have a bunch of 0s, Clouds, Cures (no magics apart form those), Maleficent Enemy, Oogie Boogie Enemy, and attack cards with values over 6. Also pack a couple of Elixirs, or better yet, MegaElixirs. Use 0s or higher ones on ALL his attacks, especially when the screen goes white and he teleports at the speed of light. This HURTS bad. Dodge Roll or 0 it. Jump when he slams his scythe into the ground. Dodge roll when he uses DeathScythe. Keep attacking. Use a bunch of Omnislashes. Don't forget to equip Maleficent Enemy at the start. When thaht runs out, use Oogie Boogie (u should be running low on HP by now). Then keep attacking, don't stop even when he card breaks you.
NOTE: If you want, pack a Vexen Enemy in there.
Good luck! Hope this helps!