I would argue for the following rule: In the Commander format if a player has thirteen (13) or more poison counters, he or she loses the game
Each Draft Booster contains 15 Magic cards and 1 token, Helper card, or ad card, with a combination of 1 card of rarity Rare or higher, 34 Uncommons, 910 Common cards, and 1 Land card
You can really go all-in on the explore sub-theme when playing Merfolk, as pairing Hakbal with NicanzilNicanzil, Topography TrackerTopography Tracker, Path of DiscoveryPath of Discovery, Twists and TurnsTwists and Turns and Wildgrowth WalkerWildgrowth Walker is a powerhouse core
it can't be cast with a single Plains or off-color Mox, casting a single Hyppie with it is not enough to win a game, and it's a dead card when you do have enough land