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For decks built around Artifacts, this is trivial

Again, pulling this early on in a match could prevent the opponent from ever setting up

Therion "Empress" Alasia X EARTH Level 8 [ Reptile / Effect ] ATK 2100 DEF 2500 You can only use each of the following effects of "Therion "Empress" Alasia" once per turn

I think it's an exceptional amount of increase as a permanent effect

R Rare Floowandereeze and the Magnificent Map X SPELL Field During your Main Phase: You can reveal 1 Level 1 "Floowandereeze" monster in your hand and banish 1 "Floowandereeze" card with a different name from your Deck, then, immediately after this effect resolves, Normal Summon the revealed monster

Despite their private distribution, some of these prestigious cards eventually reached the secondary market