Depending on how long ago the card was printed, its rules text may say when this comes into play, when this enters the battlefield, or simply when this enters they all mean the same thing
This is a 150 HP water-type Basic ex card, with two attacks: a 1-energy Slash for 30 damage and a 4-energy Dimensional Storm, which does 150 damage and 20 to each of the opponent's benched Pokemon, but does force you to discard three Water energy when used
It lets your 2/x Ninjas trade up into staples like Thrasios and Drannith Magistrate
Since youre in green and white, you have access to all sorts of protection spells like Heroic Intervention and Teferis Protection, letting you keep your commander nice and safe while you disrupt your opponents plans
1/1 Bat creature with flying, for Desecrated Tomb and Regal Bloodlord
Nesting Dragon