Experiment Kraj cannot have any +1/+1 counters on it. Sage of Hours and Zegana, Utopian Speaker must both have a +1/+1 counter on them.
-Put 4 +1/+1 on Experiment Kraj using the Adapt ability from Zegana, Utopian Speaker.
-Put a +1/+1 on Experiment Kraj using its own ability.
-Remove all counters on Experiment Kraj, using Sage of Hours ability, to take an extra turn.
-Repeat each turn for infinite turns.