mtg card list database Then and Now, Part 1 MTG Card Database - Magic:

Sanguine Bond is the traditional card that goes infinite with Exquisite Blood, creating a feedback loop between the two abilities

That said, you can access 7 of your 15 cards in your sideboard in best-of-one matches using special cards like Invasion of Arcavios, Fae of Wishes through the Granted mode to look for cards outside the game cards in your sideboard are considered to be outside of the game and similar with special mechanics like lesson and learn from Strixhaven

Also, you can play the top card of your library too

As a fun piece of Magic history, the term comes from a classic card called Rampant Growth

Often you will be breathing a sigh of relief when you are able to cast this Mercenary for 4 mana

Invasion of New Phyrexia / Teferi Akosa of Zhalfir Im a big fan of army-in-a-can cards