Generally, you dont want to play a land before combat, as Laelia could hit one when she attacks
Basically the way it works, as is printed on the card, is that you can cast it when you declare your attackers, turn your attacking creatures face-down and then shuffle them around
Creature - Spirit Wolf Color tag templates(None) Spirit of the Hunt Flash When this creature enters, each other creature you control that's a Wolf or a Werewolf gets +0/+3 until end of turn
The Four-Color Main Commanders The commanders showcased at the front of each pre-constructed deck will be four colors: each will have a converted mana cost of four, one of each color
Carrot backs you up by keeping Characters rested, weakening the opposing players aggression, and forcing them to find a way to remove Carrot
X Speed can also help both Mew ex and Koffing retreat for free, which will be a bit more energy efficient than picking them back up