Greninja ex (214/167) The combination of Shinobi Blade and Mirage Barrage make this the best card for competitive matches
C Common Yamatako Orochi X WATER Level 1 [ Sea SerpentTunerEffect ] ATK 0 DEF 800 This card on the field can be treated as a Level 8 monster when used for a Synchro Summon
Monster card Abilities are: Tuner, Gemini, Flip, Toon, Union, Spirit, and Special Summon
It wouldnt be long before Omnath, Locus of Rage and The Gitrog Monster would come along and really diversify the possibilities, but it was the monogreen Elemental who really kick-started the archetype in my opinion
bamman124 didn't specify how difficult this deck is to play
Foil Back Most trading card games feature special foiling treatments on some cards in order to differentiate those cards within a set 99.9% of holofoil cards feature that foiling on the cards front