It's an effect that is so powerful but so generic that it can fit in almost any deck
Mana abilities are the exception to the activated ability prohibition
You can swap Heroic Intervention for Inspiring Call, which is technically more thematic but also harder to cast
This year also, my favorite goes to my wifes work, and that is Kaalia of the Vast by Livia Prima
Anchor to Reality Axgard Armory Bitterthorn, Nissa's Animus Captain America, Liberator Cirina Bargainspinner Cloud, Midgar Mercenary Deadeye Quartermaster Fighter Class Forging the Tyrite Sword Godo, Bandit Warlord Godo, Bandit Warlord Honored Knight-Captain Kassandra, Eagle Bearer Kellan, the Fae-Blooded Kellan, the Fae-Blooded Kodama of the West Tree Nazahn, Revered Bladesmith Open the Armory Quest for the Holy Relic Raven Clan War-Axe Relic Seeker Runed Crown Steelshaper Apprentice Steelshaper's Gift Stoneforge Mystic Stonehewer Giant Strata Scythe Sun-Spider, Nimble Webber Sunforger Taj-Nar Swordsmith
It fulfills the role of graveyard hate, it's a creature so you can easily search it up and play off creature synergies, it's pretty reliable ramp especially if you're running fetchlands of your own, and it's just 3cmc
