This card is excellent in any Death and Taxes-style deck with Stoneforge Mystic and pairs nicely with token producers such as Sai, Master Thopterist, but the ways to abuse Skullclamp are plentiful
The prices for this Commander pre-con spiked dramatically following The Lost Caverns of Ixalans release, so its a relief to see this discount bringing things back down to normal
Auras are one of the best ways to grow the Champion, since they'll make it an insurmountable threat on top of the +1/+1 counters
Some Kenrith builds also skew more towards group hug territory, which can also be fun to play against
Pick your favorites, put them in your deck, and battle
You can still happily run Rofellos with only half your lands as forests and he is still a top rate ramp card but when you are mostly forests the card will outright win a lot of games for you