He seems to be able to somehow hide enormous structures like ships in the mist of the storm
Im not sure however how this affects the scale of grey on the remaining stamp
Sample Decks: Niv-Mizzet, Parun Commander and Arjun, the Shifting Flame Commander 10 Treasure Treasure decks have gotten progressively stronger, and that's largely thanks to how many red cards can create them
Karn, Silver Golem, Masticore, Memory Jar, and Mox Diamond in From the Vault: Relics
6 Zethi, Arcane Blademaster You'll Get A Kick Out Of This One Zethi is the in-universe version of Chun-Li, Countless Kicks from the Street Fighter Secret Lair crossover
Augur of Autumn is much less of a factor for red decks, and theres no right or wrong way to approach this balance, but I do think that its meaningful to think of Courser as an anti-red card and decide how much you care about that sort of thing