Reddits r/PokemonTCG (March 30, 2025) reports 14 hits per Booster Box (5 ex, 4 IRs, 2 SIRs), a 28% rare rate, matching our tests (CardChill, April 2025)
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If a creature an opponent controls enters the battlefield at the same time that Urabrask the Hidden enters the battlefield under your control, Urabrask's effect doesn't apply to your opponent's creature
If you draw one card off this, youre really laughing
A representative example is the play of Be Prepared for All Things (4) to help other investigators with their settings, then retrieve it with Moirai's Shrine and use it again
The difference, though, is that hes a creature, whereas those are enchantments