If I have a Kharox and a Hidden Tornado Warrior at a battlefield, then reveal Tornado Warrior to empower Kharox, can I play the unit from the trash to the battlefield?
I wasn't able to find a card named Tornado Warrior in the database. Could you double-check the exact name of that hidden card? It's possible it has a different name — e.g., Windsinger, Tideturner, or another card with similar wind/tornado flavor — and knowing the exact card matters for the interaction.
Here's what I can tell you from the rules and Kharox's text:
Kharox says: "When I become [Empowered], choose an opponent. They [Burn 3]. Then you may do this: Choose a unit in their trash and play it, ignoring its cost."
The key point is that Kharox becomes Empowered only when you pay its activated ability cost ( [6][C][C] : Empower me. Use only if not Empowered. ). Simply revealing a hidden card at the same battlefield does not empower Kharox — unless that hidden card itself has an ability that empowers Kharox (which I'd need the card name to verify).
On the question of where the unit from trash goes: when you play a unit from the opponent's trash via Kharox's triggered ability, you follow normal "play a unit" rules — it must go to your Base or a Battlefield you control. Since you control the battlefield where Kharox is, you can play the unit there, provided that battlefield remains under your control when the ability resolves (Rule 187.4.c prevents losing control while items are on the Chain).
To give you a complete answer, please confirm:
- The exact name of the hidden card you're referring to, and
- Whether you're using that hidden card to somehow pay Kharox's empower cost, or if you believe revealing it triggers an empower effect on its own.
Once I have the card name, I can look it up and give you the precise ruling.