mtg commander decks crimson vow Innistrad: Deck Whenever you cast a nonlegendary creature spell with flying Magic: The Gathering: Innistrad: Crimson

They do have to cast a seven mana sorcery at some point and thats somewhat difficult even with the seven life buffer it provides

You can use any number of reanimation effects to quickly bring it back, or you can use a card like Show and Tell to just cheat it into play as early as turn three

Storvald, Frost Giant JarlStorvald, Frost Giant Jarls page will reveal quite a few options, but not all Be sure to take a look at Scryfall for other examples

Permanents entering don't cause abilities of permanents your opponents control to trigger

KOGLA AND YIDARO What do you get when you cross a giant, furious ape with a giant, spiny-backed turtle