The Summon Response Chain:
Providing the Summoning of the monster is not negated during the Summon Negation Chain, the monster is now considered to have been Succesffully Summoned (as is the case in our example above).
At this point, the Timing Window to activate "Bottomless Trap Hole", "Torrential Tribute" (and all similar cards) opens (the Summon Response Chain begins).
However, given the fact that no "Trigger Effects" are activated which use up the Turn Player's Priority, Player A retains the right to activate the first card(s) effect on this chain, and does so as follows:
- Player A activates the effect of "Blowback Dragon" on Priority.
Despite the fact that Player A has activated the effect of "Blowback Dragon", the Timing Window in which "Bottomless Trap Hole", and "Torrential Tribute" remains open until both players stop responding to the monster's Summon and allow the chain to resolve.
- Player B chains "Bottomless Trap Hole"
- Player A chains "Interdimensional Matter Transporter" targeting "Blowback Dragon"
At this point in the chain, Player A is attempting to cause the effect of "Bottomless Trap Hole" to disappear as "Blowback Dragon" would no longer be on the Field when "Bottomless Trap Hole" resolves.
As a result, Player B chains "Enemy Controller" in an attempt to cause the effect of "Interdimensional Matter Transporter" to likewise disappear, as "Blowback Dragon" would then be on their opponent's side of the Field.
- Player B chains "Enemy Controller", Tributing "Sangan" as its cost and targets "Blowback Dragon"
This triggers the mandatory Trigger effect of "Sangan", which will activate, and start a new chain after the current chain has finished resolving (see Chain Resolution below).
Player A once again responds by attempting to flip "Blowback Dragon" face-down with "Book of Moon" which would cause the effect of "Enemy Controller" to also disappear.
- Player A chains "Book of Moon" targeting "Blowback Dragon"
As both players are still responding to the summon of "Blowback Dragon", the Timing Window to activate cards like "Bottomless Trap Hole", "Torrential Tribute" and similar cards remains open. As such, Player B is legally allowed to activate the effects of "Torrential Tribute" and does so.
- Player B chains "Torrential Tribute"
- Player A does not respond
- Player B chains "Call of the Haunted" targeting "Sangan".
In other words, despite "Bottomless Trap Hole" and "Torrential Tribute" being activated as Chain Links 2 and 6 respectively, they do not Miss the Timing as both players are continuing to respond to the Summon, and therefore the Timing Window remains open.
While I did not say it above, there are two additional steps which occur in the chain after Player B activates "Call of the Haunted", as follows:
- Player A does not respond
- Player B does not respond
At this point, the Timing Window to activate new card effects on this specific chain closes, and all card effects on the chain are now allowed to resolve.
The moment this occurs, the Timing Window to activate "Bottomless Trap Hole" and similar cards closes for that particular Summon as the game state is now considered to progress beyond the Summoning of that specific monster(s) (i.e the Summon Response Chain ends).
Although this did not happen in this example, if the following had occured, the Window in which cards can be activated during the Summon Response Chain closes, and neither player can respond to the summon of that specific monster:
- No Trigger Effects are activated by Player A.
- No Trigger Effects are activated by Player B.
- Player A chooses not to activate a card effect on Priority.
- Player B chooses not to activate a card effect in response to the Summon.
In this alternate example, neither player has initiated a card effect on the Summon Response Chain and so the chain resolves with no effect. Player A cannot then choose to activate "Torrential Tribute" themselves, as the Timing Window has been closed, and both players would now Miss the Timing to activate such an effect.
Once the chain has fully resolved, the effect of both copies of "Sangan" (Once for Tributing it for "Enemy Controller" and once for it being destroyed by "Torrential Tribute") will begin a new chain as Chain Links 1 and 2.
Credibility is just a fancy way of saying you are a leader among sheep.