(Updated) Slifer Control Deck with an Ojama Engine.
The Bosses & Divine Tributes (6):
3x Slifer the Sky Dragon
3x Metal Reflect Slime (Maximum copies to guarantee your 1-card Egyptian God Slime wall)
The Streamlined Ojama Engine & Starters (10):
3x Ojama Blue (Crashes into enemy monsters to search any 2 Ojama cards)
3x Ojama Red (Normal Summon it to instantly flood the field with your vanilla Ojamas)
1 each of Ojama Yellow, Ojama Green, Ojama Black (Trimmed to 1 each to reduce brick hands)
1x Ojama Pajama (Protects your monsters and lets you discard Ojamagic for free value)
The Power Spells & Consistency Tech (18):
2x Ojamagic (Discard fodder that instantly adds Yellow, Green, and Black to your hand)
2x Forbidden Droplet (Send Ojamagic to the GY to negate an enemy monster and boost Slifer by +3000 ATK)
2x Thunderforce Attack (Wipes your opponent's board and fills your hand back up to max)
3x Card Advance (Reorders the top 5 cards of your deck AND grants a vital second Normal Summon for Slifer)
2x Fusion Deployment (Reveals Ojama King to Special Summon any vanilla Ojama straight from your Deck)
1x Foolish Burial Goods (Sends Ojamagic directly from the deck to the GY to trigger its 3-card search instantly)
1x Polymerization (For your classic Ojama Fusions)
1x Card Destruction (Refreshes your hand, discards Ojamagic, and supercharges Slifer)
1x Change of Heart (Classic: steals opponent's monster and use as Tribute)
1x The Monarchs Stormforth (Classic: Tribute opponent's monsters)
1x Harpie's Feather Duster (Classic: destroys all enemy Spells and Traps)
1x Called by the Grave (Simple protection to stop your opponent's graveyard effects)
The Traps (6):
3x The Revived Sky God (Brings back Slifer from the GY and draws you up to a full hand of 6 cards)
3x Soul Crossing (Tributes 3 of your opponent's monsters during their turn to summon Slifer)
Extra Deck (6 Cards)
3x Egyptian God Slime (Tribute your Metal Reflect Slime to bring out this 3000 ATK/DEF triple-tribute powerhouse)
2x Ojama King (Classic 3-monster Fusion via Polymerization)
1x Ojama Knight (Classic 2-monster Fusion via Polymerization)
Side Deck (15 Cards)
3x Mystical Space Typhoon (Swap in against heavy Spell/Trap backrow strategies)
3x Solemn Judgment (Pay half your Life Points to negate anything that threatens your setup)
3x Mirror Force (Classic battle protection to punish aggressive decks)
3x Torrential Tribute (Clears the entire board of monsters the moment anything is summoned)
3x Swords of Revealing Light (Classic stall tool to freeze your opponent for 3 turns while you build your hand)
Game face:
Strategy 1: Going First (Setting the Trap)
When you are forced to play first, your goal is to build a defensive wall, cycle through your deck, and set up an explosive disruption for your opponent's turn.
1. Cycle and Search: Use Card Advance to look at and reorder the top 5 cards of your deck to secure your upcoming draws. If you have Foolish Burial Goods, use it to dump Ojamagic directly into the Graveyard, instantly putting Yellow, Green, and Black into your hand to fuel your hand size.
2. Establish the Shield: Set your Metal Reflect Slime or face-down Ojama Blue.
3. The Opponent's Turn Ambush: Pass the turn. The second your opponent commits monsters to the field, you spring your trap:
• Activate Soul Crossing to tribute their monsters to bring out Slifer from your hand.
• Or activate The Revived Sky God to bring back Slifer from the GY, forcing both players to draw until they have 6 cards, instantly raising Slifer to a massive 6000 ATK.
🔨 Strategy 2: Going Second (Breaking the Board)
If your opponent goes first and builds a threatening board of monsters, your goal shifts into breaking their field using their own resources.
1. The Droplet Counter: Activate Forbidden Droplet, discarding Ojamagic as the cost. This permanently negates your opponent's monsters. Because Ojamagic hit the Graveyard, its effect triggers to immediately pull 3 Ojamas from your deck to your hand—keeping Slifer’s attack stat incredibly high.
2. Clear the Backrow: Activate Harpie's Feather Duster to completely clear out any hidden enemy Traps or Spells.
3. The Slime Shortcut: Set Metal Reflect Slime and instantly Tribute it on your turn to Special Summon Egyptian God Slime from the Extra Deck. Because it counts as 3 tributes, you can immediately sacrifice it to Normal Summon Slifer.
4. The Finisher: Use Thunderforce Attack during your Main Phase to destroy all face-up monsters your opponent controls, drawing cards for each one destroyed, and swing for lethal damage.
🛡️ How to Pilot the 15-Card Side Deck
Your Side Deck consists of iconic, high-impact classic cards. You will swap these in during games 2 and 3 to hard-counter your opponent's deck style.
If your opponent is playing... Your Side Deck Adjustment The Gameplan
Heavy Spells & Traps (Decks that try to stall you or destroy your Slimes) Side In: 3x Mystical Space Typhoon, 3x Solemn Judgment
Side Out: 2x Fusion Deployment, 1x Ojama Red, 3x Card Advance Use MST to pop their active threats. Save Solemn Judgment specifically to negate cards like Harpie's Feather Duster or Heavy Storm that threaten your set Traps.
Aggressive Beatdown (Decks that spam high ATK monsters to kill you quickly) Side In: 3x Mirror Force, 3x Torrential Tribute
Side Out: 2x Fusion Deployment, 1x Ojama Pajama, 3x Card Advance Sit back and play defensively. Let them summon their monsters and commit to an attack, then flip Mirror Force to clear their field, leaving them completely exposed.
Stall / Control (Decks that hide behind defensive walls or block attacks) Side In: 3x Swords of Revealing Light, 3x Mystical Space Typhoon
Side Out: 3x Ojama Blue, 3x Soul Crossing If they won't attack your Ojama Blue, drop your own Swords of Revealing Light. This buys you 3 guaranteed turns to comfortably gather your combo pieces.