mtg blue extra turn cards Taking All the Turns – A Modern Turns Primer – you may sacrifice a Merfolk Teferi, Timebender | Dominaria |

That does apply to the Kida's owner's cards as well, though, so it must be used strategically if any attacks are going to be made

Weve seen cards cycle for varying amounts of colorless and colored mana (Smoldering Crater, Forgotten Cave, Desert of the Fervent)

it also fits very nicely into decks that want you to bin your own things (such as Korvold)

Birds of Paradise has fallen out of favor in Constructed due to the power of other mana dorks such as Delighted Halfling and Ignoble Hierarch, but its a slam dunk in multicolor Commander decks at the very least

Well, thats exactly what Helix Pinnacle is, although youll need to put a little bit of work in to win