One of my favorite cards in my Fire arsenal is the lowly, often overlooked Ant Miner. Yesterday's daily quest resulted in a Gold Ant Miner, to go along with the level 5 I use every chance I get. I find that when strategically placed, along with a sacrificial battle chicken at the front of the battle, I often times end up with a difference-making tank with massive amounts of health considering the very low 2 mana cost.
Here's one of my recent examples of the Ant Miner making all the difference during a battle with an alt of mine. Any other 2 mana card would probably have gotten steamrolled....
https://splinterlands.com/?p=battle&id=cf442738eae935d94728812e0caac132218a0c84