The colour of the cards symbols and outline reveals the rarity of the card of which there are currently 5: Common (white), Uncommon (blue), Rare (gold), Mythic (orange), and Masterpiece (red)
Garnering a mana advantage is one of the best ways you can win a game of Magic, plus there are plenty of lands with powerful activated abilities you can double down on when you untap them
The evolution of rarities, era by era To put the evolution of the system in perspective, here is how rarities have stacked up over the decades
The highlight, though, is sacrificing it to give all your creatures hexproof and indestructible until end of turn
White and Red have some cheap instants and enchantments that could really make the card overpowered early on in the game, allowing you to control the board as soon as it comes out
Therefore, the list of objects it affects is determined once: at the moment when Past in Flames resolves and comes into effect