Some of these are replacement effects that double how many tokens would be created under your control, while others take you tokens you already have in play and multiply them
Nuking a dual land and putting your opponent behind by a turn, while simultaneously putting yourself ahead by a turn (or four) seems devastating, especially if your curve continues well past 6 (which it ought to!) The question is not is this a good card, because the answer to that is, objectively, yes
The token is a Zombie in addition to its other types and is black instead of its other colors
Even if you're not running this archetype, it's still a solid blue enchantment to pair with creatures that cant be blocked, as it protects them from sorcery-speed removal or board wipes
Yes, after dancing around the idea for years, tournament legal Transformers cards are finally going to be a thing in Magic
When Tarmogoyf first game out, we looked at it all wrong