The Mega cards are as powerful as youd hope, and are going to absolutely flip the meta
You can replicate this setup by including Dragonites Evolution line (Dratini and Dragonair), a couple of Druddigons, and the following Trainer Cards: Leaf, Sabrina, Potion, Poke Ball, Professors Research, and X Speed
It was a Mono-Red deck that ran a lot of the concepts of Sligh and using mana each turn and the mana curve before that was a thing
But even with Tarmogoyf, the only people who got completely blown out were the ones who were very stubborn
youll want a collection goal and a corresponding dataset
That said, at the time this card was released, there were only 3 low-level Dual monsters other than Level 4, so it wasn't much of a problem for Dual Soldiers to support Dual itself and not to support this card