Once Urza is in play, your mana explodes, letting you chain spells and hold up interaction effortlessly
With a cost of eight, a requirement to exert all cards in the inkwell upon play, and un-inkable status, Mufasa - Ruler of Pride Rock doesn't come cheap
You'll often see PSA-graded cards for sale online
Stax: A Critical Distinction I mentioned that Stax tends to overlap with Pillow Fort strategies, but there's a much deeper difference between them
More importantly, the creature card has a useful ability in that whenever it attacks or is targeted by an opponents spell, it can deal three damage to each opponent (making it potentially useful in multiplayer formats such as Commander) or exile (essentially remove from the game, in Magic: The Gatherings lingo) the top two cards of the players deck - the player then picks one of those two cards, which they can choose to play until the end of their next turn