typhlosion pokemon card (Holographic) Pokemon Card Game/HeartGold & SoulSilver

Two mana to cast and one mana to activate sends one land to your hand and a variable number of cards into your graveyard, the perfect place to reanimate them with some eldritch spell

From a flavor standpoint, I also think this is very fun because it essentially allows you to imagine the Ents droning on and on endlessly until one of your opponents gets so frustrated they destroy one of the two pieces of this interaction

WotC pulled off some cool things like MDFCs that can transform from one side to another, borderless saga cards that read like comic book pages, and cards that are fun to say as you play them, like Whoosh

The set was filled with illustration rare cards, many of which were included in the Trainer Gallery subset