Barrensteppe Siege
Enchantment
As this enchantment enters, choose Abzan or Mardu.
• Abzan — At the beginning of your end step, put a +1/+1 counter on each creature you control.
• Mardu — At the beginning of your end step, if a creature died under your control this turn, each opponent sacrifices a creature of their choice.
Tuan Duong Chu
Rulings
If you somehow control Barrensteppe Siege and no choice was made for it (perhaps because another permanent on the battlefield became a copy of it), it has neither of the two abilities.
(wotc • 2025-04-04)
Barrensteppe Siege’s Mardu ability will check as the end step starts to see if a creature died under your control this turn. If none did, the ability won’t trigger at all.
(wotc • 2025-04-04)
Rulings
If you somehow control Barrensteppe Siege and no choice was made for it (perhaps because another permanent on the battlefield became a copy of it), it has neither of the two abilities.
(wotc • 2025-04-04)
Barrensteppe Siege’s Mardu ability will check as the end step starts to see if a creature died under your control this turn. If none did, the ability won’t trigger at all.
(wotc • 2025-04-04)