Resonance Blast (共鳴砲;kyoumeihou) is a keyword introduced in SD58, currently only possessed by [School Band]Riolu Tida (Vo/Gt). The wording is as below:
- Resonance Blast: XX(/YY) (When Attacks) You can reveal two cards from your decktop. Among them, you can summon/deploy a "XX"(/"YY")-named card, without paying the cost. Discard any remaining card(s).
Resonance Blast serves as a better version of Resonance, being able to reveal two cards instead of one. The name is also a reference to Bombardment, which is exclusively owned by The TigerTwelveGodKing Revol-Tiger, the motif of Riolu-Tida.