LIGHT
11Elemental HERO Cosmo Neos
Archetype:
Elemental HERO
ATK:
3500
DEF:
3000
View:
14096
"Elemental HERO Neos" + 3 "Neo-Spacian" monsters with different Attributes Must first be Special Summoned (from your Extra Deck) by shuffling the above cards you control into the Deck. (You do not use "Polymerization".) If this card is Special Summoned from the Extra Deck: You can activate this effect; for the rest of this turn, your opponent cannot activate cards, also cards your opponent controls cannot activate their effects. Your opponent cannot activate cards or effects in response to this effect's activation. Once per turn, during the End Phase: Shuffle this card into the Extra Deck, and if you do, destroy all cards your opponent controls.
Elemental HERO Cosmo Neos — Power Evaluation
Final Score: 57 ± 6 · Confidence: Medium
- Intrinsic: 57 · Deck: 60 · Meta: provisional
- Primary role: Boss / End-board · Secondary: Board breaker
Why it scores here
Cosmo Neos is a 3500-ATK Fusion whose value is its effect, not its stats. Once Special Summoned from the Extra Deck it locks the opponent's card and effect activations for the turn, and in the End Phase it can return itself to the Extra Deck to destroy every card the opponent controls. That makes it a strong once-per-turn board wipe that can be reused, but it needs Neos plus three Neo-Spacian monsters of different Attributes, and the recorded boards show no end-board or boss stats from it (endMonsters 0, bossMonsters 0). The 3500 ATK earns no points on its own, and its 97.8% Neos partner rate reflects a fixed Heroic requirement, not extra power.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 55 | Fusion needs Neos and three Neo-Spacian monsters from the field or hand, and Neos is in 97.8% of the sampled decks, so the route is reliable but not one-card (observed/inferred). |
| Combo & Conversion | 50 | Average power index is 33 across 5 boards, and none of the examples show it as a starter, searched, or payoff piece, so conversion is only partly confirmed (observed). |
| Resource Economy | 45 | The card returns itself to the Extra Deck and can be re-summoned, but the wipe costs the body and needs 4 materials again, so there is no measured card advantage (inferred). |
| Effect & Interaction | 85 | The turn-long activation lock and the End Phase wipe of all opponent cards are strong, hard-to-play-around disruption from the card text (verified). |
| Material Utility | 20 | As a 3500-ATK Fusion it is a poor generic material, and the text gives no material-side benefit (verified). |
| Resilience & Flexibility | 50 | The wipe happens only at End Phase, so the card can be removed before that, but the Extra Deck return gives it a repeat route when the requirements are met (inferred). |
| Deck-Building Efficiency | 65 | It is a single Extra Deck slot run once in 395 of 400 decks, with only Neos as a specific requirement, so it is cheap to run (observed). |
Calculation
Weight profile: 0.7 Boss/End-board + 0.3 Board breaker. Intrinsic ≈ 57, Deck ≈ 60, Meta = provisional. Modifiers: Specific-material garnet (-2). Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Once-per-turn End Phase wipe that destroys every opponent card (verified)
- Turn-long lock on opponent card and effect activations (verified)
- Reusable: it can return to the Extra Deck and be summoned again (verified)
- Runs in 395 of 400 sampled decks with a 97.8% Neos partner rate (observed)
Weaknesses
- Needs Neos plus three Neo-Spacian monsters of different Attributes (verified)
- Board-wipe effect is once per turn and only at End Phase (verified)
- Its boards show no end-board or boss stats from the card (observed)
- Poor as material because of its 3500 ATK body (inferred)
Counters / choke points
- Removing the card before its End Phase effect resolves (inferred)
- Hitting the Neos or Neo-Spacian pieces before the Fusion is completed (inferred)
Best use
Boss / End-board finisher with a board-wipe End Phase effect. Decks: Heroic, Neo-Spacian, Elemental HERO. Suggested copies: 1.
Evidence & gaps
- Verified: Fusion summon needs Neos plus three Neo-Spacian monsters of different Attributes (card text); Activation lock for the turn after Extra Deck Special Summon (card text); Once per turn End Phase: return to Extra Deck and destroy all opponent cards (card text); Runs once in 395 of 400 sampled decks (deck data)
- Observed: Average power index 33 across 5 boards, with no recorded starter, searched, or payoff role (combo data); Neos is a partner in 97.8% of sampled decks (deck data); Heroic archetype inclusion is 60.2% of sampled decks (deck data)
- Inferred: The wipe is reusable only through a repeat Fusion summon, so card advantage is roughly even at best; Removal before End Phase is the practical answer
- Data gaps: no guides supplied no banlist token, assumed 3 copies (unlimited) combos sample is 5 boards with no role breakdown no rulings available for the timing of the lock versus the End Phase effect