The closest I could find to anybody doing it in the mainstream recently was Artifact (I know, I know, I'm stretching the word "mainstream" here) with a slightly bastardised version of the concept handled via Steam's marketplace, and even then it's still an online auction house, not just doing fun swaps with your pals and saying "well I've got this, what've you got?", like exchanging the best parts of your packed lunches at school
Finally, the easiest is just to equip Heros Blade which gives +3/+2 to the equipped creature
In reality, the art is upside down and things are falling as you hold it like a normal Magic card
Ledian #10Rare $0.31 Eelektross #46Rare $0.15 Pansage #12Common $0.12 Tangrowth #8Rare $0.22 Magikarp #32Common $0.32 Caterpie #1Common $0.24 Charmeleon #19Uncommon $0.30 Simisage #13Uncommon $0.17 Scolipede #58Rare $0.28 Panpour #36Common $0.12 Duskull #58Common $0.72 Duskull #46Common $0.77 Duskull #51Common $0.66 Duskull #50Common $0.41 Duskull #80Common $0.47 Duskull #86Common $0.73 Duskull #61Common $0.40 Duskull #38Common $0.21 Duskull #83Common $0.29 Duskull #69Common $0.10
If you can successfully redirect this damage, youre onto a winner
I also count 31 cards that reward you for having counters in some way, such as Inexorable Tide and Rikku, Resourceful Guardian