yugioh cards that reverse effect damage Yu-Gi-Oh! - Ally of Justice Break (HA02-EN050) - Hidden Arsenal 2 - Unlimited Edition Yu-Gi-Oh!: The Best Burn Cards

Triggered abilities only come into effect when some other condition in the game becomes true

Tamiyo is particularly good since shes effectively a one-man planeswalker

Representing the Metal and Lightning types, like some kind of dragon-shaped Magnezone, this card would be horribly outmatched in the modern day, but in 2005 it was pretty powerful, able to dish out damage and maybe dodge an attack - plus loading up on energy thanks to its ability

This is probably the least important point on the list, but you also ideally want the box to look and feel nice if it fits all the other criteria

And as it's free to put it in play, and free to put into your graveyard, it's absolute fodder for infinite loops