I dont really have a bad thing to say about Tireless Tracker, but you obviously cant include it in rarity or set-restricted Cubes, and I could see it being problematic if youre into very low-power environments
If an effect counts the number of instant and sorcery cards in your graveyard, Destined // Lead counts once, not twice
So I've been chipping away at 'fixing' it the past couple days, and it's much better now (but still not perfect)
[226] They later released an expansion Battle for Zendikar featuring multi-color Planeswalkers Kiora and Ob Nixilis and a colorless Eldrazi Ruiner, and a second master set Shadows Over Innistrad which has 4 new Planeswalkers and also includes the addition of cryptoliths
What you see is what you get with Cloak : all it does is make your creature unblockable, as well as giving it shroud, just like Greaves