In Commander, you can grab any card you want, whether it's a huge creature to take over the game or some type of emergency board wipe if the board becomes a bit too dangerous for you
If you choose the first mode and the target creature is an illegal target by the time Erebos's Intervention tries to resolve, the spell won't resolve

GET ALL 4 FINAL FANTASY-THEMED COMMANDER DECKS-FINAL FANTASY VI: Revival Trance, FINAL FANTASY VII: Limit Break, FINAL FANTASY X: Counter Blitz, and FINAL FANTASY XIV: Scions & Spellcraft BATTLE ALONGSIDE ICONIC FINAL FANTASY HEROES-Join forces with Terra, Herald of Hope in the Revival Trance deck, Cloud, Ex-SOLDIER in the Limit Break deck, Tidus, Yuna's Guardian in the Counter Blitz deck, and Y'shtola, Night's Blessed in the Scions & Spellcraft deck NEW CARDS + ALL NEW ART-Each ready-to-play deck contains 100 cards featuring new FINAL FANTASY-themed art, including 25 Commander cards entirely new to Magic: The Gathering FOIL LEGENDARY CARDS-Each deck also includes 2 Legendary Creature cards with a shiny Traditional Foil treatment that can be played as your commander COLLECT SPECIAL ALT-BORDER CARDS-Each deck also comes with a 2-card Collector Booster Sample Pack containing 2 alternate-border cards of rarity Rare or higher
How it plays
This is because, when a battle enters the battlefield, one player (as defined by the battles subtype) is tasked with becoming its protector