The thunderbird is a 3-Mana-Monster, so it can be played in each deck, which has 3 Mana left.
He has a strong Main-Attack and a pre attack, which destroyed himself.
Because the thunderbird has no special abilities, he is a 3-Mana filler for Light decks
A 100-man Deck with the thunderbird would be played like
Light / 2er-Formation
Top : White Knight / Valkyrie
Bot : Djinn / Thunderbird