Beating an opponent down with 2/2s is all well and good, but in black its often better to have both a sac outlet and a way to benefit off of sacrificed permanents
In this way the Lorcana doesnt change so much as it shifts to use a Lorcana term
This aspect also lets you use Reincarnation to surprise block an opponent, or even win over the top of someone by resurrecting Thassas Oracle
This brokenness seems fitting, as within the lore, Krrik is potentially the most advanced Phyrexian that exists, part of the invading army that got caught in a time bubble during the Time Streams novel
However, with modern cards that let you untap your artifacts for free or steal their abilities, Time Vault gets a lot nastier
If you do not have the $100 to purchase all the cards suggested by Guys That Magic, other options exist