Is a card already on the field when its own effect resolves?
Yes. Entities and weapons count as on the field as soon as they are played, so their own effects can include them.
Step by step
- Fumiko is played into your Garden. Her On Play can return an entity in your Garden to your hand, and she can choose herself.
- The Zero entity waits in your Alley. You bring it through the Gate into the Garden.
- Its effect deals 2 damage to all entities in each Garden, and that includes itself.
Good to know
Bringing an entity through the Gate does not trigger its On Play again. On Play happens only when the card is played.
From the official game rules.
