Sapphire cards, like Aurora: Dreaming Guardian, have unique effects that can help build strategies and buff other characters
Iron Man is good for finding what you need, but he can be slow to go about it
Seven mana is very steep for an artifact that needs other creatures to be successful, though
Ben discovered that if you went up to 29 lands and 64 cards, the mana was much more reliable
With infinite mana, you can use the same strategy you used to recur Lotus Petal to loop Finale of Devastation into a hasty Deathrite Shaman, which you can activate an endless amount of times to drain opponents out of all their life
If youre coming from another format like Modern or Historic, you might notice some analogues between decks