Scapeshift is mostly known for its power alongside cards like Primeval Titan and Valakut, the Molten Pinnacle in Modern, where the ability to sacrifice any number of lands and then tutor up that many lands and put them directly on the battlefield often ends the game on the spot with a massive pile of Valakut triggers
If you copy a Thundertrap Trainer with offspring, when the kid enters it also lets you look at the top four cards of your library and put one in your hand
In game, you constantly have to plan for your opponents visible Lurrus
However, what I can give you is a helpful starting point
Keeping a six-mana Planeswalker alive isn't always easy, but if Chandra sticks around, she can pressure the table, clear the board, and refill your hand turn after turn until everyone else starts feeling the heat