Simultaneous Effects

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As it is physically impossible for multiple actions to occur simultaneously, there are a number of rules which govern how simultaneous effects are activated or performed.

If both players are required to perform actions simultaneously, such as by the effect of "Dark World Dealings", the turn player physically performs the action first, followed by the opponent, though both actions are considered to have occurred at the same time. In this example, the turn player must discard 1 card first, then, the opponent will discard 1 card, and the game will treat these two actions as having occurred simultaneously.[1] [2]

When multiple Trigger Effects want to activate simultaneously, first determine whether or not the effect can be legally activated at that time, then the players will form a chain with these effects in accordance with the rules for simultaneous effects. These rules are colloquially referred to as Simultaneous Effects Go On Chain (SEGOC).

Once all Trigger Effects have been placed on the chain, players can continue building the chain with fast effects, starting with the person who did not activate the most recent effect on the chain.

TCG[edit]

Trigger Effects which would activate at the same time (in the same yellow box of the fast effect timing chart) are activated in the following order:

  1. Turn player's mandatory effects.
  2. Non-turn player's mandatory effects.
  3. Turn player's optional effects.
  4. Non-turn player's optional effects.

If there are multiple effects within each order, the player may choose which effect to activate first.[1] [3]

Examples:[edit]

Example 1[edit]

Both players each control a "Sangan", and a "Peten the Dark Clown". The effect of "Dark Hole" resolves, destroying all monsters on the field. The last thing to happen is the resolution of "Dark Hole", and all monsters on the field being destroyed, so all effects can be legally activated. Following the order for simultaneous effects, assuming that both players want to activate all their optional effects, we end up with the following chain:

As the opponent was the last one to activate an effect, the turn player has the first opportunity to activate a fast effect as Chain Link 5.

Example 2[edit]

Player A activates "Super Polymerization", using their "Elemental HERO Shadow Mist" and their opponent's "Vanguard of the Dragon" to Fusion Summon "Elemental HERO Gaia". In this case, the last thing to happen is the Fusion Summon of "Elemental HERO Gaia", so the optional "when" effect of "Vanguard of the Dragon" cannot be activated. The mandatory effect of "Elemental HERO Gaia" is activated as Chain Link 1, and the optional effect of "Elemental HERO Shadow Mist" is Chain Link 2.

OCG[edit]

Effects which would activate simultaneously form a chain in accordance with the following priority levels:

  • Priority Level 1: The effects of cards that activate mandatorily in that timing.
  • Priority Level 2: The effects of cards that are face-up on the field or GY or are otherwise public which can be optionally activated in that timing.
  • Priority Level 3: The effects of cards that are in the hand or Set or are otherwise private which can be optionally activated in that timing.

If multiple cards of the same player in the same priority level would be activated, they form a chain in the order prefered by the player.

If a card in the hand becomes public by some card effect, that card can be activated in the priority level 2 timing.[4]

Exception[edit]

It is only possible for each player to activate the Trigger Effect of one monster that could Special Summon itself from the hand per chain.

Examples[edit]

  • A face-up Beast monster you control is destroyed by your opponent's card effect and sent to the GY whilst you have one copy of "Green Baboon, Defender of the Forest" in your GY, and another copy in your hand. In this scenario, you can only activate the effect of one copy of "Green Baboon, Defender of the Forest". Even though one copy is being activated, and Summoning itself, from the GY, the effect is capable of activating in the hand, and thus the restriction applies.[7]

See Also:[edit]

References[edit]