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Even as a coin flip effect, this can still let you hit the Energy threshold for any of your Fire-type Pokemon

#139 Omatstar

Trading card game players can start with ready-made Starter or Structure Decks, and then add to those Decks using new cards from booster packs

With Link Monsters not being able to exist in Defense Position and requiring it to be face-up for the arrows on the card to be visible, you can understand exactly what kind of ruling nightmares would be caused if you flip a Link Monster into face-down Attack Position and as a result, the card was errata'd

It didnt really make a lot of appearances, but the mechanic at least has some history in the game

While this starts off small, it wont be a huge threat to your opponents for a few turns still, letting you get a few smaller hits in and saving your more threatening creatures from removal spells later in the game