If you can activate its encore ability while multiple players are still in the game you'll be able to clear the board of any big threats, while gaining a significant chunk of life
If you play Magic at all beyond Standard, youll want to get your playset of Boltwave sooner rather than later
Shiny Impetus will rarely pay for itself: your opponent will either throw away the creature or find a way to destroy the enchantment
This shard likes to sacrifice creatures, work with graveyards, pump up its commanders, control the board, and get aggressive
For more information, please see the most recent version of the Magic Tournament Rules at wpn.wizards.com/en/document/magic-g (2021-07-23)
Finding Balance I like that the card-draw ability is tied to an attack trigger, rather than just passively happening whenever a land card is put into your graveyard from anywhere