"Bryan Talbot" (8)
At the beginning of your upkeep, sacrifice Barrow Ghoul unless you exile the top creature card of your graveyard.
Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.
As an additional cost to cast this spell, sacrifice all permanents you control and discard your hand.
Target player loses 5 life.
Enchant creature
Enchanted creature has "Cumulative upkeep ." (At the beginning of its controller's upkeep, that player puts an age counter on it, then sacrifices it unless they pay its upkeep cost for each age counter on it.)
Exile the top creature card of your graveyard: Necratog gets +2/+2 until end of turn.
When an opponent casts a creature spell, sacrifice Straw Golem.
Whenever Tolarian Entrancer becomes blocked by a creature, gain control of that creature at end of combat.
Gatherer works better in the Companion app!