Three Wish Star Marwichi
LIGHT Level 3 ATK0 / DEF0 Fairy/Tuner:
You can reveal this card in your hand to your opponent to shuffle this card back you’re your deck. When you would take Battle Damage that would reduce your Life Points to 0, if this card were in your deck, reveal this card from your deck to your opponent to reduce the Battle Damage to 0 and add this card to your hand. When you would take Battle Damage that would reduce your Life Points to 0, if this card were in your hand, reduce the Battle Damage to 0 and Special Summon this card from your hand. If your opponent would declare an attack while you control this face-up card, you can remove this card from play to negate the attack and end the Battle Phase. While this card is removed from play, during your next Draw Phase, instead of drawing a card from your deck, remove from play 1 “Miracle Comet” from either your hand or deck and Special Summon 1 “Miracle Marwichistar” from your Extra Deck (This is treated as a Synchro Summon.).

Miracle Marwichistar
LIGHT Level 4 ATK2100 / DEF0 Fairy/Synchro/Effect:
1 “Three Wish Star Marwichi” + 1 “Miracle Comet”
While this card is the only card you control, this card is unaffected by your opponent’s card effects and can’t be destroyed by battle, and any Battle Damage inflicted to you is reduced to 0. If your opponent controls a monster with an ATK greater then the ATK of this card, this card can attack your opponent directly. If you control a card besides this card, return this card to your Extra Deck and draw 1 card.

Miracle Comet
LIGHT Level 1 ATK0 / DEF2100 Fairy/Effect:
While your Life Points are less then your opponent’s Life Points, you can Special Summon this card from your hand.

Not in any way meant to be balanced. Made for a character idea of mine. Basically, their entire deck is made of crap like Fairy Dragon, and the only good cards in the deck are the three listed above. And then, somehow, he/she just wins. And then the other guy is like "wut". You know, kinda like how the main characters of the Yu-Gi-Oh animes pull off those funky last minute comebacks they're so famous for.