The triggered ability is "When you move your venture marker into this room, [effect]." For example, when you move your venture marker into Cave Entrance (the first room of Lost Mine of Phandelver), scry 1
For example, if you want to pay the waterbending cost of North Pole Patrols activated ability, you could pay mana of any color, tap three creatures (other than the Patrol, which taps itself as part of the cost), tap three artifacts, or pay 1 mana, tap one creature, and tap one artifact
SAFE MATERIALS: Acid & PVC-free, so you can rest easy knowing your collectible cards are safe
Or you can 0 him to Brainstorm which is great card draw
As it turns out, this unique skillset is the perfect fit to counter one of the strongest (and most popular) decks at the moment, Arceus ex