When a temporary unit causes loss of battlefield control (trashing a hidden Mushroom Pouch) at the beginning phase, which triggers first: Mushroom Pouch's draw effect or the Temporary keyword killing the unit?

Ruling: Both Mushroom Pouch and Temporary are triggered abilities that trigger at the start of your Beginning Phase, so you choose the order in which to put them on the chain.

Sequence:

• Both abilities trigger simultaneously at the start of Beginning Phase
• The controlling player selects the order to place them on the chain
• You can choose to have Mushroom Pouch resolve first (drawing a card before the unit dies) or have Temporary resolve first (killing the unit and trashing the hidden card without drawing)

Nuances:

• Temporary triggers "before scoring" but still allows player choice of ordering with other Beginning Phase triggers
• You might choose not to draw first if concerned about burning out