Okay, for Sakuya, I had some trouble, because most spellcards are too danmaku like, so this is more of a mix of spell cards and skill cards.
Neutral Special
Illusion Sign "Killing Doll"
Notes:
- Number of knives: 16 (Original has twice the amount)
- Homes in on target
- Range: Same as Palutena's Autoreticle (Neutral Special)
- Damage: 1-3% per knife (Avg: 32% total if all knives hit)
- Other: Throws knives 2 at a time, with 1-2 frames between each throw. Can be interrupted if user gets hit
Side Special
Wound Sign "Inscribed Red Soul"
Notes:
- Slashes 15 times
- Damage: 2% per hit (30% total if all attacks hit)
- Hold for 4-5 extra seconds to slash 25 times (Original Amount)
- 2-3 steps long steps forward before attack
- Melee Attack
- Other: Target can attempt to move out of range to avoid getting hit by all slashes
Up Special
Vanishing Everything
Notes:
- Teleports with input direction
- Range: As far as Zelda's Farore's Wind (Up Special)
- Throws a card on floor
- Card deals 1-2% if enemies step on it
- Card disappears after 3 seconds, or if enemies step on it
- Other: Cannot do special attacks if teleport into air, smash/tilt attacks only before landing
Down Special
Perfect Maid
Notes:
- Counter attack
- Teleports behind enemy with arms crossed
- Knives surround enemy, attacking immediately after user teleports
- Time stop while knives attack, forcing enemy to be attacked, unless latter shields
- 3 circles of knives (36 total)
- Inner circle: 8 knives
- Middle circle: 12 knives
- Outer circle: 16 knives
- 1% per knife (36% total)
Final Smash
Sakuya's World + Buriallusion "Phantasmic Killer" + Scarred Soul "Soul Sculpture"
Steps/Order:
1. Sakuya stops time for 5 seconds (Sakuya's World)
2. Red glowing knives appear and strike right in front of her during time stop (Phantasmic Killer)
If enemy's damage is below 150%:
Time resumes after attack and match continued as usual
If enemy's damage is above 150%:
The background turns into a crimson red mirroring the Scarlet Mist incident's fog/mist. The enemy is immobolized in front of Sakuya. Sakuya slashes the enemy with lightspeed blows of glowing red slashes 30 times before the enemy get's K.O.ed instantly with a huge final blow.
Notes:
- Phantasmic Killer deals 20% seeing that other moves are already very OP
- The move only works if Phantasmic Killer hits target
- Phantasmic Killer can only hit one target, giving Sakuya a disadvantage in multi-player battles
- The final slash of Soul Sculpture can hit nearby enemies

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What if Touhou characters were in Smash?
FanfictionI wrote this just for fun, because I've always hoped for Touhou characters to be in Smash. THIS ISN'T A STORY!! IT'S JUST A LIST OF IDEAS FOR MOVES!!