First the active player chooses which creature they'll sacrifice, then each other player in turn order does the same, knowing choices made before their choice
One of the cards would definitely be a special Pikachu, and there would also be a random card
Using the Hypergeometric Calculator, we find that in a 60-card deck, youd need to include 26 lands to reliably hit four lands among your initial 11 cards, giving you an 80% chance of always having a fourth land by turn 4
This could be an associated mechanic, a type of gameplay, or a type of creature
Aggro commanders that convert a board state into a win typically do so via damage
The strategy is to keep Mickey alive so that you can play your Magic Broom, Bucket Brigade , use them to Challenge your opponents, and put them right back into your hand to play again on the next turn