Different print sheets (common, uncommon, rare) were used for each rarity in Alpha
red card draw is usually impulsive and anything that isnt used is immediately discarded (which can be an advantage if your deck needs discard outlets)
This one has the clearest path in constructed as it's efficient and powerful with a clear destination in mind
Its simply a matter of a handful of standout cards seeing play in the current format that causes problems for Mono Red: If you could somehow take those cards out of the equation, Mono Red would massacre Delver
They can still play cheap spells and creatures and when you can play something every turn, even if it's not exactly what you wanted to play, you're not miserable but you're also not executing your plan
Legendary Creature - Serpent Creature (CTRL to add secondary) Dilemma Ecological Appreciation Search your library and graveyard for up to four creature cards with different names that each have mana value X or less and reveal them