Once you have a Solosis, Vulpix and Sneasel (Ditto Prism Star can substitute for either of the latter), and you fear that your opponent will KO one of them, then Ditto is the perfect backup
Outside of mana acceleration, theres no way to cast Welcoming Vampire and trigger it on Turn 3 besides Jadar that I could find
It has broken all kinds of records for Pokmon, reaching over 150 million downloads, winning all kinds of rewards, and - most importantly - making tons of money
If tails, during your next turn, this Pokmon can't attack
Although Emert's transformed Hades form does cause further cards to be exiled instead of getting re-used again in the graveyard, there are plenty of ways to avoid the downside while still reaping the rewards