Due to the uncertainty of opening booster packs, accumulating specific cards needed to build a decent deck can be very tricky
Example: Against Eldrazi and Taxes, Path to Exile is often their most important card
Flashback Borrowed Knowledge Colossus of the Blood Age Kirol, History Buff Ark of Hunger 5 Aziza, Mage Tower Captain Standard & Commander This legendary Djinn sorcerer only costs one white and one red mana , and if taken at face value, is a fairly unremarkable 2/2 legendary creature
Usually, the unknown in Magic is in the opponents hand or their library which is threatening, for sure but what if that element of surprise that could be anything was already on the battlefield, attacking your opponent
There are situations where you can mitigate the downside