In Cube, this card is excellent
You don't have to use Planechase cards to play with these decks, but if you want some truly wild, anything-can-happen moments in a less-serious game of Commander, they can add a lot of fun to the table
Mardu Surge Strike While The Iron Is Hot Ally with the Mardu clan to make attacker tokens and sacrifice them for value with this Red-White-Black Commander deck
Birthing Pod Good enough to spawn an entire archetype named after it, several pod commanders, and 25 different Wish.com versions, Birthing Pod spawned, er, birthed a whole subset of decks focused on working up a chain of creatures
UPDATE (March 2023): Just adding the pair mentioned in the comments
You can block the incoming attack on the planeswalker with your creatures and spells