Sangen Summoning 
100
Field SpellDuring your Main Phase 1, FIRE Dragon monsters you control are unaffected by your opponent's activated effects. During your Main Phase: You can add 1 "Tenpai Dragon" monster from your Deck to your hand, then discard 1 card. You can only use this effect of "Sangen Summoning" once per turn. If this card is destroyed during the Battle Phase: You can target 1 Dragon Synchro Monster you control; double its ATK.
Printings:
Legacy of Destruction: LEDE-EN059 (Common) - 2024-04-25OTS Tournament Pack 26: OP26-EN012 (Super Rare) - 2024-10-17
2025 Mega-Pack Tin: MP25-EN197 (Ultra Rare) - 2025-09-04
Prices:
Cardmarket: 0.20 €TCGplayer: $ 0.08