Outside of the cards pricey enough to be officially graded and sealed inside a fancy case by the likes of PSA, looking for less top-dollar cards (look, Im not Post Malone) comes with the constant risk of stumping up the cash for something that either doesnt arrive at all, arrives in a condition different to what you were expecting or turns out to be a complete fake
It's a great counter to any card that might win the game, and can help you win the game against something like a Thassa's Oracle combo since that user won't have a card to draw when their turn comes back around
Aminatou, the Fateshifter Aminatou, the Fateshifter is more of a weird Scrambleverse effect, but it results in you controlling someone elses permanents
That 1st edition changes everything, Best of luck with your collecting goals buddy
However, if a single creature with lifelink deals combat damage to multiple creatures, players, and/or planeswalkers at the same time (perhaps because it has trample or was blocked by more than one creature), the ability will trigger only once
One of the longstanding tricks in the format is to play Karmic Guide alongside Saffi Erikdottir so that you can put the echo trigger on the stack and then sacrifice Saffi, eventually bringing back Karmic Guide (since, in your Karador deck, Saffi is cheaper to cast)