Slifer the Sky Dragon

Slifer the Sky Dragon — Power Evaluation

Final Score: 48 ± 7 · Confidence: Medium

• Intrinsic: 51 · Deck: 50 · Meta: provisional
• Primary role: Boss/End-board · Secondary: Floodgate/Control

Why it scores here

Slifer converts a heavy 3-Tribute Normal Summon — which itself cannot be negated and blanks opponent responses on summon — into a large hand-scaled body that shrinks and destroys Attack-Position monsters the opponent summons. Its iconic status and ATK potential earn nothing here; the score comes from a real support network (Egyptian God package, Dark Magician and Floowandereeze tribute shells) and from 400 recent decks actually committing slots to it. The cost is steep — three materials, no inherent protection, and a self-GY clause if it is Special Summoned — so it lands mid-range rather than among competitive bosses. No combo evidence was supplied, so combo conversion is text-only inference.

Axis scores

Calculation

Weight profile: 0.7 Boss/End-board + 0.3 Floodgate/Control. Intrinsic ≈ 51, Deck ≈ 50, Meta = provisional. Modifiers: High-cost brick risk (-2). Final formula: 0.40*Intrinsic + 0.60*Deck

Strengths

• Normal Summon cannot be negated, and cards/effects cannot be activated when it is Normal Summoned, so the summon itself is very hard to stop
• Gains 1000 ATK/DEF for each card in hand, scaling into a large body when hand size is preserved
• Reduces the ATK of monsters the opponent Normal/Special Summons in Attack Position by 2000, destroying any reduced to 0
• Backed by a real support network — it appears in Egyptian God, Dark Magician and Shining Sarcophagus shells with The Revived Sky God as a frequent partner

Weaknesses

• Needs 3 Tributes to Normal Summon (cannot be Normal Set), so it is dead without dedicated tribute fodder
• No inherent protection once it is on the field; simple removal answers it
• Once per turn during the End Phase, if it was Special Summoned it is sent to the GY, limiting revival lines
• Its suppression only hits Attack-Position summons — Set or Defense-Position plays are unaffected
• Spending tribute material reduces hand size, directly shrinking its ATK/DEF

Counters / choke points

• Kaiju-style tributes or The Winged Dragon of Ra - Sphere Mode to tribute it off the field
• Non-targeting field wipes such as Dark Hole / Raigeki / Lightning Storm used after it resolves
• Shifting to Defense Position or Setting monsters to dodge the 2000 ATK reduction and destroy clause
• Preventing the deck from assembling three Tributes (hand disruption on the support engines) leaves it stranded in hand

Best use

Three-tribute control finisher / boss. Decks: Egyptian God, Dark Magician, Shining Sarcophagus, Floowandereeze. Suggested copies: 1.

Evidence & gaps

• Verified: Requires 3 Tributes to Normal Summon and cannot be Normal Set; This card's Normal Summon cannot be negated, and when Normal Summoned cards and effects cannot be activated; Gains 1000 ATK/DEF for each card in your hand; Once per turn, during the End Phase, if it was Special Summoned, it is sent to the GY; Reduces the ATK of a monster the opponent Normal/Special Summons in Attack Position by 2000, destroying it if reduced to 0
• Observed: Runs in 400 recent decks at an average of 1.39 copies (298 decks run exactly 1); Egyptian God is the top archetype at 67 decks (16.8%), with Dark Magician (38) and Shining Sarcophagus (27) next; Spread across 87 distinct archetypes, with generic staples as top co-deck partners (Ash Blossom 62.8%, Monster Reborn 46.2%, Called by the Grave 46.2%); The Revived Sky God co-occurs in 26% of its decks, indicating a real revival/support line
• Inferred: Its spread into Floowandereeze and Dark Magician implies tribute-engine routes rather than a generic splash; Because its ATK scales with hand size, spending three tribute materials lowers its own stat line
• Data gaps: no combos supplied — combo conversion is text-only inference no guides supplied no banlist token — assumed 3 copies (unlimited) no metagame sample, so meta power is null/provisional