Arlo, Lord of the Burrow

Eminence — At the beginning of your upkeep, If
Arlo, Lord of the Burrow is in the command zone
or on the battlefield, create a tapped black kindred artifact squirrel token with "{10},{t}: each opponent
loses 1 life and you gain life equal to the amount of
life lost this way, this ability costs 1 less to activate
for each token you control"
whenever one or more squirrels you control deal
combat damage to a player, create a 1/1 green
squirrel creature token