2 Level 4 monsters
While this card has material, you can Tribute Summon Dragon monsters for 1 less Tribute, also, during your Main Phase, you can Tribute Summon 1 monster in Attack Position in addition to your Normal Summon/Set. (You can only gain this effect once per turn.) You can detach 1 material from this card, then target 1 Level 7 or 8 Dragon monster in your GY; Special Summon it, then, if "Ruins of the Divine Dragon Lords" is on your field or in your GY, you can add 1 Level 7 or 8 Dragon monster from your Deck to your hand. You can only use this effect of "Herald of Divine Dragon" once per turn.