It was so good it was quickly banned, and remains to this day illegal in Modern and Legacy
The Brothers' War Set Booster boxes are the go-to product if you're looking to dive straight into the collectibles from the set
With Ivy, you generally build it as a very different Voltron-style deck, casting a bunch of enchantments and single-target spells and turning them into two-for-ones by making sure you target someone other than Ivy
Similarly, its second ability triggers even if the creature spell with mutate was cast for a cost other than its mutate cost
Commander Deck includes 1 deck of 100 Magic cards (98 nonfoil cards and 2 Traditional Foil Borderless Legendary cards), 10 Archenemy cards, a 2-card Collector Booster Sample Pack (contains 1 Traditional Foil or nonfoil alt-border card of rarity Rare or higher and 1 Traditional Foil Uncommon card), 10 double-sided tokens, 1 deck box (can hold 100 sleeved cards), 1 Life Wheel, 1 strategy insert, and 1 reference card
When Thriving Rhino enters the battlefield, you get EE (two energy counters)