These four are intended to turn an existing card into a cycle. Can anyone guess which card?
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Nationalist Tactician W
Creature – Human Advisor
W, T, sacrifice a Soldier: Creatures you control get +2/+1 and have vigilance until end of turn. Activate this ability only any time you could cast a sorcery.
½
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Selhoff Geistcatcher 1U
Creature – Human Wizard
1U, T, sacrifice a Spirit: Draw two cards. Activate this ability only any time you could cast a sorcery.
2/1
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Fireburst Shaman 3RR
Creature – Human Shaman
2RR, T, sacrifice an Elemental: ~ deals 6 damage to each other creature. Activate this ability only any time you could cast a sorcery.
4/4
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Battle-Scarred Lumberjack 1GG
Creature – Human Warrior
T, Sacrifice a Treefolk: Search your library for two Forest cards and put them onto the battlefield tapped. Then shuffle your library.
Activate this ability only any time you could cast a sorcery.
4/3
Is it Deathmark Prelate?