But probably the best thing about the keyword is that it's also a nice easy way to retrigger powerful on-cast abilities
Some difficulties surrounding planeswalkers as a card type is that, due to their relative rarity, a lot of them were built around supporting a specific deck archetype
Isshin, Two Heavens as One's ability affects only triggered abilities with conditions that are directly related to attacking, such as "whenever [this creature] attacks" or "whenever you attack with one or more creatures." It does not affect triggered abilities with other trigger conditions, such as "whenever [this creature] becomes tapped." Isshin's effect doesn't copy the triggered ability
It also has a built-in self-reanimation effect, which can change combat math at instant speed, though at a hefty cost
Bringing a solid three power and three toughness and Haste to the board, Risona is bringing a decent body for her cost, ready to rush in for an attack
Scavenging Ooze: Time to complete my playset