B · Engine & Sequencing · §10
The Kinkou four-to-five stack, Legion ordering, ready-effect ordering, what Thrill does and does not carry over, and Brynhir’s reaction window.
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From the guide . §10 Sequencing & Timing
Kinkou draws if your other units total at least five Might. Suppose they currently total four. When Kinkou is played, its play ability triggers and the Legend triggers, you control both, and you choose the order they go on the chain.◆src
This matters most when you have one four-Might unit, when you have two two-Might units, when a temporary reduction has dropped the board below five, or when you want to save a permanent buff for another battlefield.
Legion applies once another card has been played that turn. Play the cheapest useful card first, resolve its triggers, then play Hopeful for two less. If the first card was a unit, that is two Legend triggers over the sequence, and both bonuses should be allocated only after the contested battlefield is clear.◆src
Lead on Hopeful at full price only when the four-Might body is immediately necessary, when there is nothing else to do, when keeping the cheaper card as a reaction is worth more than the two Energy, or when the enabling card would be punished.
Play it after the target has exhausted. Attack, move or activate with the valuable unit, then play , ready it, and use it again or keep it back. Playing First Mate while everything is still ready throws the ability away, and you will exhaust the intended unit a moment later.
Twilight has to attack to trigger. Use the high-value unit first, attack with Twilight, ready the used unit, then reassign that body. Do not attack before you have identified the target: the trigger cannot be banked.◆src
Thrill banishes the unit before replaying it. Moving through a non-board zone makes it a new game object, so damage, temporary Might, Stunned status and other object-specific modifications do not carry over unless something explicitly says so.◆src
The costs are symmetrical: temporary positive bonuses are lost, buffs on that unit are lost, the unit leaves its battlefield during resolution, a Showdown can change completely, and the opponent can react before Thrill resolves.
The current wording is two sequential instructions, each dealing three damage to a unit, with all targets chosen up front. The same or different units may be chosen.◆src
So it can deal six to one unit or three to each of two, damage prevention may affect one or both instances, and choosing the same Deflect unit twice means paying the Deflect additional cost for each time it is chosen. The opponent reacts before either instruction resolves.◆src
Brynhir’s play ability stops opponents playing cards for the rest of the turn, and the protection does not exist merely because Brynhir has been announced. Play Brynhir, let them react, resolve the ability, and only then execute the protected sequence.◆src