Lonely Arroyo
Land — Desert
Oracle Text
This land enters tapped.
When this land enters, it deals 1 damage to target opponent.
{T}: Add {W} or {U}.
Watch Out
ETB trigger, not a cast triggerRules Note
This card's ability triggers when it enters the battlefield, not when it's cast. Effects that double ETB triggers (like Panharmonicon) work here. Countering the spell prevents the creature from entering, so the ETB won't fire.