For 'Forge of the Future' with text 'Kill This', can the card be trashed at any point or does it require another card's effect to destroy it?

Ruling: 'Kill This' is an activated ability where killing the card is the cost to activate the ability, as indicated by the colon (':') in the card text.

Sequence:

• Pay the cost by killing/trashing the card
• The ability activates

Nuances:

• This is an activated ability, not a passive effect that can be used at any time without structure