Official Rulings
My opponent has 5 
in their pool, a Senator Shrix (WC 193) with 5 on it, and a Keyfrog (MM 369). Their key cost is 6. If I destroy their Keyfrog, do they forge a key? If so, where does the æmber come from?
in their pool, a Senator Shrix (WC 193) with 5 on it, and a Keyfrog (MM 369). Their key cost is 6. If I destroy their Keyfrog, do they forge a key? If so, where does the æmber come from?Yes, your opponent will forge a key through the resolution of Keyfrog’s “Destroyed:” ability. Forging is not optional; if a player has enough Æmber to forge, including Æmber on cards like Senator Shrix, they must do so. The active player will make the decision regarding how much Æmber will be taken off of Senator Shrix and how much will come from the opponent's pool.
Source: Rulebook
My opponent has 5 in their pool, a Senator Shrix (WC 193) with 5 on it, and a Keyfrog (MM 369). Their key cost is 6. If I destroy their Keyfrog, do they forge a key? If so, where does the æmber come from?
in their pool, a Senator Shrix (WC 193) with 5 on it, and a Keyfrog (MM 369). Their key cost is 6. If I destroy their Keyfrog, do they forge a key? If so, where does the æmber come from?Yes, your opponent will forge a key through the resolution of Keyfrog’s “Destroyed:” ability. Forging is not optional; if a player has enough Æmber to forge, including Æmber on cards like Senator Shrix, they must do so. The active player will make the decision regarding how much Æmber will be taken off of Senator Shrix and how much will come from the opponent's pool.
Source: Rulebook
If I have Senator Shrix (WC 193) in play with 1 on it and my opponent plays Bumpsy (COTA 030), can I choose to lose Æmber off of Senator Shrix instead of from my pool to resolve Bumpsy’s “Play:” ability?
on it and my opponent plays Bumpsy (COTA 030), can I choose to lose Æmber off of Senator Shrix instead of from my pool to resolve Bumpsy’s “Play:” ability?No. Senator Shrix’s ability only refers to spending Æmber. Æmber is only spent when forging keys; if your Æmber would be lost, stolen, or captured, you cannot use Æmber on Senator Shrix.
Source: Rulebook
If I have Senator Shrix (WC 193) in play with 1 on it and my opponent plays Bumpsy (COTA 030), can I choose to lose Æmber off of Senator Shrix instead of from my pool to resolve Bumpsy’s “Play:” ability?
on it and my opponent plays Bumpsy (COTA 030), can I choose to lose Æmber off of Senator Shrix instead of from my pool to resolve Bumpsy’s “Play:” ability?No. Senator Shrix’s ability only refers to spending Æmber. Æmber is only spent when forging keys; if your Æmber would be lost, stolen, or captured, you cannot use Æmber on Senator Shrix.
Source: Rulebook
Commentary
If there is enough Æmber on this card (or other cards with this effect under the control of the active player) combined with the Æmber in the active player's Æmber pool during the "Forge a Key" step, the active player must forge a key.
Source: Forge
Edit this card's data.