Since it's designed for a Standard power-level, the cards are on the weaker side, but Kiora, the Rising Tide is far from weak
1999 Shadowless Holographic Charizard It's technically not a Dragon-type Pokmon, but Charizard is a dead ringer for a traditional Western dragon, and that plus fire abilities and a prominent role in the anime have helped make Charizard one of the, if not the most popular Pokmon in the franchise
Its legendary status is also beneficial because, after drawing 6 or 10 cards, youll likely find another ring to reset the counters by invoking the legend rule
You can give it Deathtouch and use it to kill the biggest threats on board, and untap it to make it immune against removal spells
Cards like Light the Way and Quandrix Command will help you get repeated effects from your green artifact-hating permanents