yugioh card time machine Yu-Gi-Oh! BLRR-EN027 Empty (Secret Rare) Mint / near mint condition trading card Time Machine - BP02-EN200 -

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Theres an old card from Visions, Aku Djinn, that puts +1/+1 counters on each of your opponents creatures

Then each face-down creature you control gains "This permanent costs less to turn face up" and "When this permanent is turned face up, if it's a creature, put a +1/+1 counter on it." (Look at the top two cards of your library

But since the likelihood of getting a card worth thousands is very rare, eBay would be your best bet for some quick cash

Also, I'd like to note that AFAIK Contraption's aren't casted so they won't trigger Acornelia's first ability (although I guess you can make them trigger the second one with something like Conspiracy + Titania's Song)