All from MTG's earliest sets and banned or restricted across most formats
Similar to the Turtle Power precon, the Fantastic Four precon is modular, letting you swap between all four members of Marvels First Family to decide whos leading your forces, while Doom Prevails is led by Doctor Doom and Loki, with the former using the connive mechanic and the latter creating illusory clones of other villains
Another bear, this one can do a bad impression of Search for Tomorrow
For example, it requires you to attack, so you have to actively push the table around to get what you want
It can be the importance of your commander and the need to have a balanced mix of cards
The fact that it is a single use card also makes it a better card design, it will not slow down games overly and it will provoke more difficult choices