If I play Get Excited! during my opponent's turn, discarding Flame Chompers as part of the spell's effect and killing a unit with a Deathknell, what is the order of resolution for Flame Chompers, Immortal Phoenix, and the Deathknell trigger?

Ruling: Yes, you can play both Flame Chompers and Immortal Phoenix to your base on your opponent's turn. The discard happens during Get Excited's resolution (not as a cost), triggering Chompers. The unit death triggers both Phoenix and Deathknell during cleanup.

Sequence:

• Get Excited is played and finalized on the chain
• Get Excited resolves: discard Chompers (Chompers trigger becomes pending), then kill the unit
• Cleanup occurs: Chompers trigger, Deathknell, and Phoenix trigger all become pending
• Finalize all pending items to the chain
• Phoenix trigger resolves first (turn player's triggers go on chain first, so resolve last)
• Deathknell resolves second
• Chompers trigger resolves third, putting Chompers permanent on chain
• Chompers auto-resolves immediately as a permanent

Nuances:

• The discard is part of Get Excited's resolution, not a cost to play it
• Chompers' discard trigger is a triggered ability that puts the permanent on chain when it resolves, not the permanent itself
• Phoenix and Deathknell trigger at the same time (during cleanup after the kill), but active player's triggers are added to chain first (so resolve last)
• If you killed your own unit, you could order Phoenix and Deathknell freely since you control both triggers