For the spell card metamorphosis it said offer 1 monster on your side of field as tribute to special summon fusion same level does mean trib Red Eyes Thousand Dragon?

You are asking about the card "Metamorphosis" and if it can tribute "Red-Eyes Black Dragon" to summon "Red-Eyes Thousand Dragon" from the Fusion Deck.

Here's the breakdown:

* Metamorphosis: This card allows you to tribute 1 monster on your field to Special Summon a Fusion Monster from your Fusion Deck with the same level as the tributed monster.

* Red-Eyes Black Dragon: This monster is Level 7.

* Red-Eyes Thousand Dragon: This Fusion Monster is also Level 7 and requires "Red-Eyes Black Dragon" as a Fusion Material.

So, the answer is YES! You can tribute "Red-Eyes Black Dragon" to summon "Red-Eyes Thousand Dragon" using "Metamorphosis".

However, keep in mind:

* You need to have "Red-Eyes Thousand Dragon" in your Fusion Deck.

* You need to have the Fusion Spell "Polymerization" in your hand or on the field.

If you meet those conditions, you can indeed use "Metamorphosis" to quickly summon "Red-Eyes Thousand Dragon" by tributing "Red-Eyes Black Dragon".