Love Tsuki and general notes from watching smite prime and from youtube. Swaps are personal takes that wanting to experiment with.
Stacking with both Trans and Book you are very weak early, this is for late game nuking. Think like a diving mid laner. BUILD LUCERNE HAMMER BEFORE FINISHING BOOK. If you build trans straight to book your into will overtake your strength and tsuki will lose out on his stun on his 2.
Ult becomes a nuke button. Watch for who has aegis and try to track if they have it up. If not, squishes can almost be one shot. If they do, play the poking game and use 2 as peel off squishies. Pairs great with picks like agni that can poke and weaken targets. Mid game once trans and book is stacked typically will have heartseeker online too, this is when ult and 1 will be deleting people.
Play for team or enemy high tank and need percent damage
Antiheal and more bulk
If aegis not needed blink works great for engage with disarm into stun, can be swapped for either above