Its worth noting that Sorin requires some sacrifices, so that pulls us in a direction further away from the current white aggro decks
Earth Kings Lieutenant Ally decks got a ton of new studs with the Avatar: The Last Airbender release
For example, if you gained 3 or more life during your upkeep and you cast Sorin of House Markov during your first main phase, its last ability will trigger at the beginning of your postcombat main phase
Then, the target opponent loses life equal to the total mana cost of the milled cards
Finally, each of those cards are converted into a fully specified JSON object using the processes I described above, and the Magic Set Editor is used to turn them into full cards With all these steps together, the program is able to create a pretty coherent set
Tapping an Equipment this way wont affect its abilities or the equipped creature