Rules Ruling · Keywords
Flow Costs, “Then Banish It,” and Abandon: The First Official Ruling Explained
The opening ruling of the Vendetta FAQ is Abandon versus a Flow spell — “then banish it” turns out to mean much more than the card text suggests. It is the best introduction to delayed replacement effects, and the FAQ explicitly takes precedence over the Core Rules. We cite the 2026-08-14 official FAQ and the 2026-07-16 CR.
Citations: CR 2026-07-16 §829.1（Flow 關鍵字，含 829.1.b.1 延遲替換效應）、§367（Replacement Effects）、§389（Delayed Abilities）· Vendetta FAQ 2026-08-14（Abandon × Flow 判例，官方明言 FAQ 優先於 CR）
What Flow is (CR 829.1)
Flow is a passive ability keyword on spells (CR 829.1.a), functionally short for: “You may play this from your trash for its flow cost. Then banish it.” (CR 829.1.b)
The key detail: the banish is a delayed replacement effect — “if it would leave the chain after becoming a finalized chain item, and leaving the chain wasn’t instructed by its own execution, banish it instead.” (CR 829.1.b.1)
Flow is an alternate cost replacing the base cost (CR 829.1.c.1); Flow costs may include resource and non-resource costs (CR 829.1.c.2); with multiple Flow instances at different costs, the controller chooses which to apply (CR 829.1.c.3).
Flow doesn’t change timing
Playing from the trash for a Flow cost does not change when the spell can be played, nor any permissions other than the zone it is played from (CR 829.1.b.2). A Flow spell without Reaction still needs a legal window.
Official ruling: Abandon on a Flow spell (FAQ #1)
Q: What happens when you play Abandon on a spell played for its Flow cost? A: It will be banished when it attempts to leave the chain.
The FAQ explains: “[T]hen banish it” in flow’s text is short for “if it would leave the chain after becoming a finalized chain item, and leaving the chain wasn’t instructed by its own execution, banish it instead.” Abandon returns the countered card to hand — but for flow’s “then banish it”, that too is leaving the chain. No matter how it happens, unless leaving was instructed by the spell’s own execution, it is banished.
The same logic applies to effects like Kai’Sa, Evolutionary (Origins) and Fizz, Trickster (Spiritforged).
Why a “replacement” and not a “trigger”
CR 829.1.b.1 defines the banish as a delayed replacement effect, pointing to Replacement Effects (CR 367) and Delayed Abilities (CR 389). Replacement effects intercede during execution and alter it (CR 367) — so the event “leaves the chain” is replaced by “is banished,” not “returns to hand, then gets banished.”
FAQ
Abandon counters my Flow spell — where does the card go?
It is banished when it attempts to leave the chain (official FAQ ruling #1). Abandon’s “return to hand” still counts as leaving the chain, so Flow’s replacement banish applies.
Do Kai’Sa, Evolutionary and Fizz, Trickster work the same way?
Yes. The FAQ explicitly says the same logic applies to those effects — if the Flow spell leaves the chain other than by its own execution’s instruction, it is banished.
Does Flow let me play the spell at any time?
No. Flow only changes the zone you play from; timing and other permissions are unchanged (CR 829.1.b.2).
What if a spell has two Flow costs?
You choose which Flow cost to apply as you play it (CR 829.1.c.3).
Can a Flow cost include non-resource costs, like discarding?
Yes. Flow costs may include both resource and non-resource costs (CR 829.1.c.2).
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