Trystans Command Trystan's Command is expensive at 6 mana, but it does what you want in an elf typal deck
You can also team up to kill an attacker with a bigger butt by multiple blocking
A lot of artifact strategies rely on cheap artifacts to get rolling, so playing Meltdown for 2 mana and wiping out multiple cards on an opposing player's board is very reasonable, sometimes bordering on game-winning
It isnt impressive as a 5/5 trample, but its easy to gmake it a 9/9, and if you can pay the cost, were talking eight +1/+1 counters, effectively attacking as a 13/13
I also removed 14 creatures from the deck because they didn't feel impactful enough compared to what I wanted to add
This would just result in an okay creature that has a decent ability that might not make it to the next turn