Plus, even if we don't manage to drain for the full 20 life, we end up with a 9/7 flying, lifelink, indestructible Ormandahl, which is usually enough to finish the job
His activated ability, however, is perhaps the absolute coolest ability on this whole list
While it could use some protection (enter Temple Altisaur), being able to discover X once per turn based on the toughness of a Dino entering the battlefield is a huge play, and one that can snowball into an easy victory if your deck is stacked the right way
Meowth can be easily found in Pokmon TCG Pocket as part of the Wonder Pick Event Part 1
And if you make some 3/1s or Treasures in your upkeep you'll really rack up value over time
Any opponents deck that can limit the amount of special summons you can make, or can counter the spells and card effects needed to summon the number of dragons needed to make the power advantage worth it, will leave you stranded with few options