Horn of Greed often counts as colorless card draw, but it also gives your opponents some agency to avoid the worst of your wincons
Its ETB pumps your entire team with +X/+X and trample, where X is the number of creatures you control
Five rare creatures, each with powerful effects that trigger when they enter and leave the battlefield
Here's a list along with approximate preorder pricing: Call the Spirit Dragons ($20) Dracogenesis ($20) Stormscale Scion ($20) Teval, Arbiter of Virtue ($10) Shiko, Paragon of the Way ($10) Betor, Kin to All ($10) Neriv, Heart of the Storm ($8) Urnei, the Song Unending ($8) Tarkir: Dragonstorm is filled with many powerful Dragons and Dragon cards worth more than the price of a Play Booster (at least during prerelease)
So far, Wizards seems to have put a lot of effort into calculating the value of Secret Lair drops
Last week, I went and ranked the newer, more modern takes on the original Weatherlight crew - the main focal point of Magic 's first major overarching storyline