Tag Rules v4.1
-Two teams, each consisting of two players, duel in turn-based fashion similarly to regular Yu-Gi-Oh gameplay.
-Matches are best-of-one-game with teams sharing a 16,000 Life Point total.
-One player from a team is designated as player A and the other as player B.
-Each player has their own Main Deck and Extra Deck, but Side Decks are not used (as there is only one game played).
-The most recent Advanced Format Forbidden & Limited Lists and rules updates are used, with a few exceptions:
-Each player has their own play area consisting of their Main and Extra Deck*, Main Monster Zones, Extra Monster Zones**, Spell/Trap Zones (including those designated as potential Pendulum Zones), Field Zone, hand, GY, and banished. Players cannot go over their individual zone limits into their teammates'.
*Each player may only access the cards from their own Extra Deck.
**Extra Monster Zones are shared by the opposing players sitting directly across from one another.
-Turns alternate between teams following the sequence 1A, 2A, 1B, 2B. Only the player going first (1A) skips the Normal Draw of their first turn. The player going last (2B) is the first player that is allowed to attack.
-When attacking, you may select a monster controlled by either opponent as the attack target, or, if they both control no monsters, then you may attack the team directly.
-If a team's Life Points are reduced to 0 or a player would draw from an empty Main Deck, that team loses the Duel. If a player achieves an alternate win condition, that team wins the Duel.
-Players may only attack with monsters or activate cards or the effects of cards that are in their play area. However, you may use the cards your teammate controls, in their GY, or that are banished when activating or resolving your cards and effects or performing your Summons.
EX1: I can Tribute my teammate's two monsters to Tribute Summon Dark Magician.
EX2: I can activate Call of the Haunted targeting my teammate's Blue-Eyes White Dragon in their graveyard to Special Summon it in one of my Main Monster Zones.
-Effects that affect only the opponent's field instead affect both opponents' fields.
EX1: An opponent attacks and my teammate activates Mirror Force. It destroys all Attack Position monsters both opponents control.
-If an effect would resolve that had an activation or triggering condition that was a result of an opponent's action, it resolves against the relevant opponent that caused the card or effect's activation or triggering condition to be met.
EX1: An opponent activates a Spell/Trap card and I chain Dark Bribe. The opponent that activated the Spell/Trap negated by Dark Bribe will be the opponent that draws a card when it resolves.
-A player resolving an effect or part of an effect affecting only your opponent's Main Deck, Extra Deck, hand, graveyard, or banished must instead choose an opponent for that effect to apply to.
EX1: I activate Mind Crush and name a card. When it resolves, I choose the opponent sitting across from me for the effect to apply to.
- "Either" player becomes "any" player and "neither" player becomes "no" player.
EX1: Rebellion can be activated during any player's Battle Phase.
EX2: While Vanity's Fiend is on the field, no player can Special Summon.
-If you would Summon a monster to an opponent’s Main Monster Zone, you may choose to Summon it to any Main Monster Zone in your opponents’ play areas.
EX1: I can Tribute 2 monsters one of my opponents controls and 1 monster the other opponent controls to Tribute Summon The Winged Dragon of Ra – Sphere Mode to any Main Monster Zone in either of my opponents’ play areas.
-Effects that affect "all" cards (perhaps of some qualifier), "both" players, or "each" player instead affect all qualifying cards or all four players (effects requiring a decision are handled in turn sequence and by the appropriate player) with a few exceptions. Any effect referencing and/or requiring a number of cards (perhaps of some qualifier) a player has in their possession may only be applied if all players meet that criteria.
Exception Group 1: When resolving Creature Seizure, Creature Swap, Dragged Down into the Grave, Exchange, Gift Exchange, or Soul Demolition, players must choose different opponents (this is decided at resolution).
Exception Group 2: When resolving the dice effects of Dice Jar or F.A. Dead Heat, only you and an opponent of your choice roll dice.
EX1: Dark Hole destroys all monsters controlled by each player.
EX2: Spatial Collapse can only be activated if each player controls 5 or less cards and restricts each player to controlling a maximum of 5 cards.
-If an effect references and/or requires a specific number of cards your opponent has in their possession or in comparison to you, then that effect may only be applied to an opponent or your choice of opponent meeting that criteria.
EX1: I control no cards and one of my opponents controls five cards while the other opponent controls three cards. I activate Evenly Matched from my hand and choose the opponent controlling five cards for the effect to apply to.
EX2: I control Evilswarm Exciton Knight and only one of my opponents has more total cards in their hand and field than I do. I can activate its effect to destroy all other cards on the field.
-Effects that count a number of cards (perhaps of some qualifier) count all relevant cards across all play areas.
EX1: Gren Maju Da Eiza's ATK/DEF is based solely on the number of your banished cards.
EX2: Buster Blader gains ATK for each Dragon either opponent controls or in either opponent's GY.
EX3: Eater of Millions gains ATK/DEF for each face-down banished card (across all four play areas).
-If time is called and a game has not finished, the active player will finish their current turn and then each other player will get exactly one more turn following the turn sequence. The team with the highest Life Point total after that point wins the match. If the Life Point totals are tied, the game will continue into Sudden Death, where one additional turn will be added to the game each time the Life Point totals remain tied at the end of a turn.