Decision Paralysis

Tap up to two target creatures. Those creatures don’t untap during their controller’s next untap step.

Peacewalker Colossus

: Another target Vehicle you control becomes an artifact creature until end of turn.
Crew 4 (Tap any number of creatures you control with total power 4 or more: This Vehicle becomes an artifact creature until end of turn.)

Herald of Anguish

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you’re done activating mana abilities pays for .)
Flying
At the beginning of your end step, each opponent discards a card.
, Sacrifice an artifact: Target creature gets -2/-2 until end of turn.

Gonti’s Aether Heart

Whenever Gonti’s Aether Heart or another artifact enters the battlefield under your control, you get (two energy counters).
Pay , Exile Gonti’s Aether Heart: Take an extra turn after this one.

Herald of Anguish

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you’re done activating mana abilities pays for .)
Flying
At the beginning of your end step, each opponent discards a card.
, Sacrifice an artifact: Target creature gets -2/-2 until end of turn.

Leave in the Dust

Return target nonland permanent to its owner’s hand.
Draw a card.

Gonti’s Aether Heart

Whenever Gonti’s Aether Heart or another artifact enters the battlefield under your control, you get (two energy counters).
Pay , Exile Gonti’s Aether Heart: Take an extra turn after this one.

Peacewalker Colossus

: Another target Vehicle you control becomes an artifact creature until end of turn.
Crew 4 (Tap any number of creatures you control with total power 4 or more: This Vehicle becomes an artifact creature until end of turn.)

Emrakul, the Aeons Torn

This spell can’t be countered.
When you cast this spell, take an extra turn after this one.
Flying, protection from spells that are one or more colors, annihilator 6
When Emrakul, the Aeons Torn is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.

Eldrazi

Annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent.)

Grave Upheaval

Put target creature card from a graveyard onto the battlefield under your control. It gains haste.
Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle your library.)

Magus of the Will

, , Exile Magus of the Will: Until end of turn, you may play lands and cast spells from your graveyard. If a card would be put into your graveyard from anywhere this turn, exile that card instead.

Magus of the Will

, , Exile Magus of the Will: Until end of turn, you may play lands and cast spells from your graveyard. If a card would be put into your graveyard from anywhere this turn, exile that card instead.

Grave Upheaval

Put target creature card from a graveyard onto the battlefield under your control. It gains haste.
Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle your library.)

Paradox Engine

Whenever you cast a spell, untap all nonland permanents you control.

Noxious Gearhulk

Menace
When Noxious Gearhulk enters the battlefield, you may destroy another target creature. If a creature is destroyed this way, you gain life equal to its toughness.

Harsh Scrutiny

Target opponent reveals their hand. You choose a creature card from it. That player discards that card. Scry 1.