Suppose I have Goreclaw, Terror of Qal Sisma and Bishop of Binding in play. When my creatures attack, I want the Bishop's ability to resolve first (targetting himself), so that he's big enough to get Goreclaw's bonus.
How do I make that happen in Arena? The Oracle rulings on Goreclaw seem to say it's possible ("If another creature has an ability that changes its power when it attacks […] you may have that ability resolve before Goreclaw’s last ability."), but I haven't figured out how to actually accomplish it.