(If you're playing Planechase, proceed to the next plane.) If you're not playing Planechase, planeswalking won't have any effect
Since then, weve been forced to make due with three-mana damage-based sweepers (Radiant Flames, Infest + effects) three-mana bad sweepers (Citywide Bust), four-mana almost sweepers (Languish, Ritual of Soot), and five mana wraths with upside (Cleansing Nova, Fumigate)
you should have enough extra lands in hand to put each one onto the battlefield and draw another card to keep going and end the ability with a bunch of extra land drops on the battlefield and a full grip of gas
It sees play in a smattering of Legacy decks, such as Lands and Maverick
Unstable also has a unique and interesting card type: contraptions
Especially since as-is it cant give itself a +1/+1 without tapping itself