If I kill my own Forge of the Future, can I choose which specific cards from my opponent's trash to recycle (up to 4 total)?

Ruling: Yes, you target 0-4 cards in any combination from any trashes (yours and/or your opponent's), and those specific cards are recycled.

Nuances:

• You have full control over which cards to recycle, not just how many
• Cards can come from any combination of trashes