Sure, giving your creatures +1/+1 is good, and can certainly help push some bonus damage, but it might not be enough to overcome an established board
Illustrated by Chris Rahn Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Not Legal Modern Legal Brawl Not Legal Legacy Legal Comp
the 21 rare (39.7%) and 9 mythic rare borderless scene cards (8.7%)
The Illustrator was the first illustration contest card, Sam Pantellerisco, owner of UK Pokmon card seller Chibi Collectables, explained to Dicebreaker
So, they can be a better alternative to English cards if you dont plan on reselling them or playing with them competitively
This has made it the weapon of choice for Modern Creativity and a powerful tool for various Legacy decks whose general gameplan is a big creature on turn 2