The game shares some similarities with Magic The Gathering, but has its own set of rules and puts a significant emphasis on the storyline, which guides the expansion releases
The specific rules about Partner can be found in section 702.124 of the Comprehensive Rules
Magic: The Gathering's 30th Anniversary Serra Angel Promo In 1993, Magic 's flavor was largely tied to traditional western fantasy - wizards, knights, and dragons were the norm, rather than cosmic horror or neon-lit cyberpunk cities MTG now has
It also enables some nasty soft locks with Eternal Witness
Greater Morphling Johnny, Combo Player Loose Lips Magical Hacker Mise Moniker Mage Mouth to Mouth Now I Know My ABC's Number Crunch Question Elemental
That can depend on which of the trading card game's ink types you favour: do you like the fun combo potential of amethyst