In Vintage, the existence of Black Lotus makes casting Yawgmoths Will trivial, and from there you can cast the Black Lotus for free from the graveyard thanks to Yawgmoths Will and get the train rolling
For example, if you tap a creature with a mana ability to pay part of the spell's web-slinging cost, you could also return that creature to your hand to pay the cost
Hiram Flaversham is a 1/6 Sapphire Storyborn Inventor that costs four ink
After all, it's no secret that Walking Ballista is the perfect card for ending games alongside any combo that provides infinite mana, such as with Heliod, Sun-Crowned in Commander or Pioneer
If a creature with persist that has +1/+1 counters on it receives enough -1/-1 counters to cause it to be destroyed by lethal damage or put into its owner's graveyard for having 0 or less toughness, persist won't trigger and the card won't return to the battlefield