There is a Legacy version
here.
Echoing Spell [one-action] Feat 20*Concentrate Sorcerer Spellshape Source Player Core 2 pg. 157Archetypes Time Mage,
Wellspring Mage* This version of the Echoing Spell feat is intended for use with an Archetype and has a different level for access than the
original feat.
You time the components of your spell with exacting precision, setting up a resonance that duplicates the spell's effects. If your next action is to
Cast a Spell of 4th rank or lower that has no duration, the spell's energy reverberates and echoes. You can Cast the Spell a second time before the end of your next turn without expending a spell slot.
Archetype Use
This feat can be used for one or more Archetypes in addition to the listed Classes. When selected this way, the feat is not considered to have its class traits.
Traits
Concentrate: An action with this trait requires a degree of mental concentration and discipline.
Spellshape: Actions with the spellshape trait tweak the properties of your spells. You must use a spellshape action directly before casting the spell you want to alter. If you use any action (including free actions and reactions) other than casting a spell directly after, you waste the benefits of the spellshape action. The benefit is also lost if your turn ends before you cast the spell. Any additional effects added by a spellshape action are part of the spell's effect, not of the spellshape action itself.