Card Tips:The Dark Door
- This card can be searched by "Rogue of Endymion", "Watch Cat", "Watch Dog", "The Despair Uranus", and other generic searchers.
- Combo this with Vengeful Bog Spirit for an effective stall out strategy.
- This card can help make "Gemini Summoner", "Gyroid", "Dark Resonator" and "Stardust Xiaolong" unable to be destroyed in battle in most cases.
- Using monsters that Special Summon copies of themselves ("Nimble Momonga", "Bubonic Vermin", "Troop Dragon", etc.) can slow down your opponent's offensive for a while.
- An easy way around this card's effect is to use monsters that can attack multiple times in a Battle Phase. Some of the best monsters to use are:
- "Elemental HERO Wildedge": Can attack all of your opponent's monsters and has 2600 ATK.
- "Tyrant Dragon": Can attack once again if a monster is still on the opponent's side of the field after it attacks once, and is immune to some common Traps that might prevent its attack from going through.
- "Cyber Twin Dragon": Can attack twice with 2800 ATK.
- "Chimeratech Overdragon": Can potentially reach incredibly high attack power with many attacks per turn (essentially one attack for every monster used in its Fusion Summon).
- Combo with "Macro Cosmos"/"Dimensional Fissure", along with "D.D. Scout Plane"/"D.D. Survivor" to create an almost impenetrable line of defense, so long as they don't have a monster with a piercing effect.
- Combo with "Molting Escape" to effectively 1 Reptile-Type monster you control unable to be destroyed by battle.
- Combo "Double Defender"/"Scrap-Iron Scarecrow"/"Cyber Barrier Dragon"/"Spiritual Swords of Revealing Light" to stop the 1 attack per turn from your opponent.
- Use this card with "Number 82: Heartlandraco" to protect it from being attacked. This card's restrictions on your monster's attacks do not matter, as "Heartlandraco" also prevents your other monsters from attacking in exchange for it being able to attack your opponent directly.
- Use "Royal Decree" to ensure the only attack on your turn will not be blocked.