Nearly everyone has a little something here to enjoy, and it helps to encourage people to get into other formats - which helps those formats stay alive, which adds new players, which makes them more fun
At the start of the Damage Step, if this card battles: You can target 1 card your opponent controls
The most common way is the suspend mechanic, like on Search for Tomorrow or Sol Talisman, which lets you exile a card from your hand, put some time counters on it, and then cast the card for free when those counters are gone
Vincent Valentine // Galian Beast This four-drop transformable 2/2 Black rare can turn a dying dork from your foes into it's power pump this with counters permanently
This takes a lot of skill, time and effort, but its a great hobby and can really help keep your cards in order
2005 Summer Battle Road Mew Victory Orb $60,000 This Pokmon card was awarded as a prize in the 2005 Summer Battle Road tournament, which had nine regional competitions