Flying

When Aethersphere Harvester enters the battlefield, you get (two energy counters).

Pay : Aethersphere Harvester gains lifelink until end of turn.

Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

When Bloodtithe Harvester enters the battlefield, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

, Sacrifice Bloodtithe Harvester: Target creature gets -X/-X until end of turn, where X is twice the number of Blood tokens you control. Activate only as a sorcery.

, , Sacrifice a creature: Search your library for a Zombie card and a Swamp card, reveal them, put them into your hand, then shuffle.

Lifelink

At the beginning of your upkeep, sacrifice a permanent.

Whenever Greater Harvester deals combat damage to a player, that player sacrifices two permanents.

Menace

When Harvester of Misery enters the battlefield, other creatures get -2/-2 until end of turn.

, Discard Harvester of Misery: Target creature gets -2/-2 until end of turn.

When Harvester Troll enters the battlefield, you may sacrifice a creature or land. If you do, put two +1/+1 counters on Harvester Troll.

Whenever a land enters the battlefield under an opponent's control, that player loses 1 life. Put a +1/+1 counter on Nightshade Harvester.

Flying

Whenever Teneb, the Harvester deals combat damage to a player, you may pay . If you do, put target creature card from a graveyard onto the battlefield under your control.

Whenever one or more Phyrexians you control attack, return target artifact card from your graveyard to the battlefield if its mana value is less than or equal to their total power.