Even the archetypes Field Spell, Salamangreat Sanctuary, speeds up the process of getting Salamangreats in the Graveyard
For example, there could be cards that each increase the lore threshold for all opponents by one or two, which is a much smaller number in comparison, but the effect would be able to stack with other sources
Karlach, Fury of Avernus (65k, prerelease foil $37) City on Fire (72k, FEA $7) Stranglehold (12k, Judge foil $8) Thrill of Possibility (228k, Mystical Archive 50) Dolmen Gate (38k, Lorwyn pack foil $120) City on Fire feels like it should have gotten there, but Karlach being in so many decks is a testament to the awesome ability to gain a second combat, with first strike added, for no cost beyond her own
A Sengoku build that cannot reliably reach turn four never gets to deploy its best card, so early defense is as important as Akainu himself