Board state: Ojer Kaslem and Mythweaver Poq are on the battlefield.

Action: attack with Ojer Kaslem, causing one or more damage to opponent, and then select a Forest in your library to add to battlefield under your control.

Expected behaviour: Mythweaver Poq’s ability triggers, which conjures an additional Forest to the battlefield under your control.

Actual behaviour: Mythweaver Poq’s ability doesn’t trigger at all.