4x6 recipe card plastic sleeves Freude Cards Protector - 100Pcs Thick Clear Sleeves for Cards, Photo Sleeves & Cover Load one Recipe Binder Bundle Recipe Binder

Image Source: Official Trainer Website of Pokemon Card Game Japan More on the toolbox, besides that it can be used for storage, you can use it to flip coins

The potential card draw is worth quite a lot, and you can build around the restriction

New dungeon cards task players with traveling each turn to give themselves buffs or summons, adding new mechanics for whole new layers of strategy

Three mana puts a Shock on each of your opponents, as well as an edict effect thats guaranteed to hit a threat

Starke of Rath I opened like six of these in Tempest packs

That might sound narrow until you realize how many important creatures fall into that range