Futase//Dissona, Azure Beauty (WXDi-P13-069[EN]) [Concord Diva]

[Auto]: Whenever this SIGNI attacks, if there is another [Dissona] SIGNI on your field, draw a card and discard a card.
[Enter] (U): This SIGNI gains "[Const]: As long as the SIGNI in front of this SIGNI is frozen and has power 5000 or less, this SIGNI gains [Assassin]" until end of turn.

(A SIGNI with [Assassin] deals damage to your opponent directly rather than battling with the SIGNI in front of it when attacking.)