Be proactive Honestly, this could probably be the mantra for most Modern decks, but it's particularly true with Infect
The counter is removed with the bolster trigger from Anafenza, and you can do that indefinitely
At the beginning of your combat, you toss a free +1/+1 counter on your stuff then one mana level two to give your any countered stuff (not just critters) ward to protect a bit
Troll of Khazad-dm solves this problem by having Swampcycling
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The final ability on the card, which allows its controller to pay three mana and sacrifice another creature to draw cards equal to the sacrificed creatures toughness, then discard cards equal to its power, will pair perfectly with not only walls, but certain treefolk, turtles, and plants, too creature types that will almost certainly fill out an eventual Felothar deck