Whether it will explode or not, you won't know until you throw!
Trigger:
Critical
[AUTO](RC):[Put this unit into your soul] When your vanguard attacks, if you have a vanguard with "Bigbelly" in its card name, you may pay the cost. If you do, draw a card, choose one of your vanguards, and it gets [Power]+5000 until end of that battle.