Trait

Tetra Line / 777

Activation
Energy

Effect

If you have no cards on your field, reduce this card's required energy by [Green×2] while in your hand.
[When Played] Draw a card, then place one card from your hand face down under a [Tetra Line] affinity card on your field.

Trigger

[Active] Choose one character on your field and switch it to active. It gains 3000 BP until the end of the turn.