All such abilities controlled by the player whose turn it is are put on the stack first, then those controlled by the next player in turn order, and so on
As you cast a spell with kicker, you can choose to "kick" that spell by paying the kicker cost
This process ended up being a lot cleaner and solved a lot of individual process issues that had built up over years
At four mana, he can sit at the top of your mana curve, and if you manage to drop a haste enabler such as Goblin Warchief, you can start doubling your goblins straight away (which then also have haste to attack the turn they enter)
[End of Your Turn] Trash all your face-up Life cards
For example, if you get to attack first and play a card such as Gustcloak Cavalier, then you can tap a target creature whenever this card attacks