Discard your lands for utility, then swing with your commander to bring a land back from the graveyard
You can use it in the middle of combat to win a fight youd otherwise lose, or you can surprise an opponent with a hasty threat out of nowhere
Becoming a shifting mass of creatures, you can pay 2 at any time to switch to something advantageous
Mastering Sideboarding in Magic Standard Decks In competitive, best-of-three Standard, your 15-card sideboard is one of your most potent weapons
Finally, all prices will be from the cheapest available printing, so long as that version is still of mythic rarity
If you lose the flip, the damage Goblin Test Pilot dealt is dealt to you instead