Sadly, three mana is a lot for this effect, which may end up relegating the card to Commander
There are some religious tendencies that dont take that angle, but on average, it seems that most moral direction is derived from treating other people reasonably like we wish to be treated ourselves
Ureni filters through your deck for a Dragon and puts it into play for free, while Ehsiki prefers you play them more fairly, rewarding you with direct damage, card draw, and +1/+1 counters for the Temur khan
There are a ton of use cases for this card, and itll only get better with each subsequent set released
Some players argue that mechanics like this are simply not Magic and whats gonna finally drive them, and everyone else, away from the game