Keeping them guessing can make them play scared
In any case, its a nice little feel-good story in the end
Mwonvuli Beast Tracker is a good one because it lets you grab a creature with deathtouch from your deck, which is useful in a pinch
The biggest nonland card difference is Sliver Overlord, which costs a whopping $20 but is worth it as a repeatable tutor and theft card
The downside, of course, is getting Kaalia to attack safely, but with cards like Anger in your graveyard or by equipping it with Lightning Greaves, you can bypass this hurdle and start flooding the board with oversized creatures like Iona, Shield of Emeria or Griselbrand (or, you know, cards that aren't banned in Commander)
It is a pretty expensive enchantment, price-wise, that costs 1 green and 4 generic mana to cast