Even the ability the card has isn't super impressive, just helpful
By preparing your board state in this manner before casting Strefan, Maurer Progenitor, you can start attacking and utilizing the Blood tokens for sacrifice once its gotten over summoning sickness
Thats great for some removal on a big enough creature, especially with lifelink, or a small creature with deathtouch
Lower grades, more accessible, allow a wider audience to own this piece of history
How else would you run Sevinnes Reclamation, Intuition, Gravecrawler, Dragons Rage Channeler and Hermit Druid in the same deck
In the early game, cast whatever spells you can manage to cast while making certain you properly sequence your lands to set up your turns in the midgame