koitsu yugioh card ITSU Archetype - Casual Cards Doitsu - Yugipedia

UL Ultimate Rare UR Ultra Rare STAR Starlight Rare C Common C Common C Common SR Super Rare UR Ultra Rare SE Secret Rare UL Ultimate Rare PS Platinum Secret Rare CR COLLECTOR'S RARE QCSE Quarter Century Secret Rare C Common SR Super Rare UR Ultra Rare SE Secret Rare UL Ultimate Rare PS Platinum Secret Rare CR COLLECTOR'S RARE QCSE Quarter Century Secret Rare C Common C Common PSE Prismatic Secret Rare PGR Premium Gold Rare UR Ultra Rare UR Ultra Rare C Common SR Super Rare UR Ultra Rare SE Secret Rare

In a singleton format you have to run a set of cards that all fulfill the same basic function, so instead of running 4 copies of Harmonize, you might run Harmonize, Greater Good, Beast Whisperer, Return of the Wildspeaker, Garruk, Primal Hunter, Shamanic Revelation, Soul's Majesty and Rishkar's Expertise

So people begun forming metas based on access to the most cracked shit

Teddiursa has the following attacks: Honey Snack - 0 damageHeal 20 damage from this Pokmon