Card text
Look at the top 4 cards of your deck. You may reveal a Trainer card you find there (except Trainers' Mail) and put it into your hand. Shuffle the other cards back into your deck.

Ancient Origins is a set in the XY series. It was released on August 12, 2015. The printed size is 98. This checklist is longer, at 101 cards. Trainers' Mail is 100/98, in position 101 of 101 on this checklist. The card before it is 99 Energy Retrieval. The collector number is above the printed set size of 98. The listed rarity is Rare Secret.
Trainers' Mail is a Trainer card. The listed subtypes are Item.
Toyste Beach illustrated this card. The same name is on 284 other cards in the catalog.
The card text says: Look at the top 4 cards of your deck. You may reveal a Trainer card you find there (except Trainers' Mail) and put it into your hand. Shuffle the other cards back into your deck. The card text says: You may play as many Item cards as you like during your turn (before your attack).
I keep a set binder for Ancient Origins, meant to hold every card of that set. This card is one slot in the Ancient Origins set binder. I still need this card.
Look at the top 4 cards of your deck. You may reveal a Trainer card you find there (except Trainers' Mail) and put it into your hand. Shuffle the other cards back into your deck.
You may play as many Item cards as you like during your turn (before your attack).
Ancient Origins, in the XY series. It was released on August 12, 2015. The printed size is 98.
100/98. It is entry 101 of 101 in this checklist.
Toyste Beach. The catalog lists 284 other cards with that illustrator.
Rare Secret.