In Constructed Magic, there are much better ways to fill your graveyard, just as there are much better creatures you can get in white for four mana
Blue Graveyard Hate Blue typically lacks dedicated graveyard hate
This Gruul dinosaur's ability gives those creatures better staying power
And if we go the proliferate route, Simic Ascendancy works just as well as Darksteel Reactor
Decklist: Golgari Death in Historic Fynn, the Fangbearer | Illustration by Lie Setiawan Creatures (29) Cecil, Dark Knight x2 Tonberry x3 Thoughtseize x3 Vampire of the Dire Moon x4 Gifted Aetherborn x2 Fynn, the Fangbearer x4 Chevill, Bane of Monsters x3 Hooded Blightfang x2 Qarsi Revenant x4 South Wind Avatar x2 Instants (6) Go for the Throat x2 Collected Company x4 Sorceries (3) Lands (22) Swamp x6 Forest x4 Blooming Marsh x2 Darkbore Pathway x2 Overgrown Tomb x4 Wastewood Verge x4 Here I have this Golgari deck list focused around winning with deathtouch creatures
3 Kenessos, Priest Of Thassa Thassa's Right-Hand Scry-Guy WotC kind of knows the sea creature archetype isnt really that good, thats why all of its support cards are pushed on power level