Cindra

When Cindra’s activated ability resolves, you choose which Draconic daggers you want to equip. You may also choose not to equip any Draconic daggers from your graveyard.

The chosen daggers must have the 1H, 2H, or off-hand subtype in order for it to be equipped. (i.e. you cannot choose to equip Kiss of Death even though it has the dagger sub-type).

You must have an empty weapon zone with nothing equipped to it when Cindra’s activated ability begins to resolve on the stack in order to equip.

A Draconic attack becomes a chain link when it resolves as a layer on the stack and becomes attacking. This means going from the layer step of combat to the attack step of combat.

If an attack is no longer on the combat chain, Last Known Information is used to determine the types of a chain link. If the attack was Draconic, You are still considered to control a (Draconic) chain link.

Decreases to resource costs are applied after increases to resource costs. If an effect would increase the resource cost of Cindra’s ability, the decreases would be applied last.

Cindra’s instant ability can be activated on the opponent’s turn, but you would not control any draconic chain links (most likely).