That's always my starting point, which is then tweaked to suit the individual deck's strategy and further tweaked with playtesting
The reason for this is plain and simple - July 18, the day of the spike, was also the day the MTG Commander Masters Sliver Swarm deck was revealed
Since it has flash, you can bring it into play after attackers and blockers have been declared and exile anything that dies during this combat, potentially getting rid of problematic creatures permanently while providing card advantage for you over the course of the game
Each booster pack contains 10 randomised cards
The prevalence of Weezing included in decks as a tank is improving this card's viability
Hour of Reckoning was a pretty mediocre wrath effect, so tossing something like Austere Command in instead gives you a bit of the flexibility to do what you want