second it plays poorly against Solitude, but the mixture of discard spells, counterspells and Dress Downs can solve this issue too
You can imagine how silly-stupid Xenagos gets quickly (especially in Commander when he doubles and speeds up Commander damage)
Wizards responded by releasing multiple Commander decks alongside every Standard set, each containing exclusive cards
This can be seen in Fire Magic, a card with an illustration of the notorious Black Mage Vivi from Final Fantasy 9
Cards like Fiery Emancipation, Thousand-Year Storm, and Niv-Mizzet, Parun can drop away with a touch of burn, and Izzet stalwarts like Goblin Electromancer, other spellslinger cards like Archmage Emeritus, and then a suite of blue countermagic can amp up the attack