Sure, it only gives you red mana that you have to spend by the end of your turn, but if that means you can start chaining spells on turn 4 instead of turn 5, youll usually be very happy with that tradeoff
P/T Set Number 493 Language Deutsch Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Standard, Timeless, Vintage Rulings (6/6/2025) If Jenova isn't on the battlefield at the time its first ability resolves, use Jenova's power as it last existed on the battlefield to determine how many counters to put on the target creature
Demolisher Spawn
It's an artifact that can store aether (mana), temporarily locks away a foe, and must be destroyed before time runs out
For one, they typically have a few others ways that they can use to win the game if needed