Sinclair, LCB Sinner

Unstable Survival — At the beginning of your second main phase, if Sinclair is tapped, put a
-1/-1 counter on him and attach a Branch of Knowledge Role token to him. (Enchanted Creature gains +6/+0. During the combat
phase, you may sacrifice this enchantment, regenerate enchanted creature and put a +1/+1 counter on it.)
Choose a Background.