Here are few things to check out to continue your Magic education: Explore Magic's varying formats, which include standard, modern, vintage, legacy, pauper, commander, and many, many more
All three are easter eggs for Magic fans who know their different worlds: New Capenna's Skybridge Towers, Kaldheim's Worldtree, and Zendikar's Skyclave Basilica
Some jokingly referred to Commander as ETB the Gathering, in reference to the text enters the battlefield that appears on many of the formats best creatures
Love it loads, and if you have tried it out yet
The catch is that aside from costing 4 mana, you also need to essentially sacrifice a creature for it to work
It helps build trust and improve your seller's reputation