The cards on this list read: When (card name) enters the battlefield, (something will happen). I wont be ranking cards like Necroduality that trigger when other permanents enter or cards that read may enter like Spark Double
Brawl Not Legal Vintage Not Legal Timeless Not Legal Commander Not Legal Pauper Not Legal Oathbreaker Not Legal Penny Not Legal Ishgard, the Holy See Land Town This land enters tapped
In the Standard Format, there are eight Basic Energy cards: A Note on Basic Fairy Energy Although Fairy Energy is also a Basic Energy card, Fairy Energy is not legal in the Standard format
As for the Frostwalla, snow mana cards require a permanent with an activation, and Rootwalla is an ability that makes perfect sense for snow mana
Vintage While I lack extensive experience with Vintage, I've found that due to the format's access to powerful artifacts from the Power 9, it's uncommon to see decks exceed the 18-land threshold
Attack 2 : flames of death Kills every card the opponent has