Does "cost" in card text always refer to the original/printed cost, or does it include additional or repeat costs?

Ruling: "Cost" in card text always means printed cost only. It does not include additional costs or repeat costs.

Nuances:

• Cards like "Riposte" that increase cost only affect the printed cost, not additional or repeat costs
• Cards like "Yordle Explorer" do not trigger even if a card like "Corina Veraza" is accelerated, because acceleration modifies the printed cost