Drawing a card whenever you cast a spell with mana value 5 or greater is excellent with sweepers like pre-rotation Sunfall, where you can kill every creature and draw a card, with removal spells like Leyline Binding, or with the various Overlords that can enter the battlefield for cheap via impeding, like Overlord of the Hauntwoods
How often are these Magic: The Gathering card prices updated
How many do you include compared to the amount of equipment you run
Yuriko, the Tigers Shadow Yuriko, the Tiger's Shadow is among the formats most infamous commanders as its unique commander ninjutsu ability skirts commander tax, making it hard to profitably remove
Some mechanics are not named, and still only possible on the client like Desert Cenote, no paper cards care about colors among cards in your hand without revealing cards
I think it's because the design favors one player over the other