For four mana, you can sneak this 3/3 Ninja with double strike onto the battlefield , meaning six damage is going to land on your opponent unless they have a counter or removal
Wizards of the Coast, the publisher of MTG, maintains a database of all legitimate Magic cards
Innistrad Remastered takes cards from every expansion to ever feature one of the creepiest planes in Magic history
A similar card is Destructive Revelry , costing RG to destroy target artifact or enchantment and dealing 2 damage to its controller
This card is very average overall, other than its high retreat cost
I used a Revive on Starmie to bring it back to life, I then used a Hyper Potion on Slaking, but it still fainted because of the Flygon (I think it got a Crit with Dragon Claw, dont remember exactly)