Dragon’s Approach deals 3 damage to each opponent. You may exile Dragon’s Approach and four cards named Dragon’s Approach from your graveyard. If you do, search your library for a Dragon creature card, put it onto the battlefield, then shuffle.
A deck can have any number of cards named Dragon’s Approach.
In most cases, you'll need to exile five cards named Dragon's Approach (the resolving one from the stack plus four more from your graveyard) to search for a Dragon card. However, if Dragon's Approach is a copy, you can still exile it along with four cards named Dragon's Approach from your graveyard to search for a Dragon card. The exiled copy will then cease to exist.
16-04-2021
wotc
The last ability of Dragon's Approach lets you ignore the "four-of" rule. It doesn't let you ignore format legality. For example, during a Strixhaven Limited event, you can't add Dragon's Approach from your personal collection.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.