Geth's Summons is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Return up to one target creature card from your graveyard to the battlefield. Corrupted — For each opponent who has three or more poison counters as you cast this spell, put up to one target creature card from that player's graveyard onto the battlefield under your control.

Complete guide

Geth's Summons is a powerful necromantic sorcery from the Phyrexian invasion that rewards you for spreading infection. While its base effect is a standard reanimation, it becomes a devastating tool for theft in a deck focused on poison counters. Mastering its Corrupted ability allows you to turn your opponents' greatest threats against them.

What It Does

At its core, Geth's Summons costs four mana to return one creature card from your own graveyard to the battlefield. However, the Corrupted keyword check occurs at the moment you cast the spell. For every opponent that currently has three or more poison counters, you may target one additional creature card in that specific player's graveyard to bring back under your control.

Resolving the Spell Step by Step

First, as you cast the spell, you identify how many opponents are Corrupted. You then choose your targets: up to one from your own graveyard, and up to one from each Corrupted opponent's graveyard. Note that if you choose multiple targets, Geth's Summons stays on the stack until all targets are processed. Upon resolution, all targeted creature cards that are still in their respective graveyards enter the battlefield under your control simultaneously.

Common Mistakes

A frequent error is miscounting targets or timing. Because you must choose all targets as you cast the spell, you cannot wait to see if an opponent becomes Corrupted later in the turn; they must already have the three poison counters. Additionally, if you target a creature in an opponent's graveyard and that card is removed (e.g., by a graveyard exile effect) before Geth's Summons resolves, the other legal targets will still be returned to the battlefield.

When to Play It

This spell is best utilized in the mid-to-late game once your opponents have been sufficiently poisoned. Unlike some reanimation spells that only hit your own bin, this scales with the number of players you have pressured. It is an excellent follow-up to a board wipe, allowing you to cherry-pick the best fallen creatures from across the table.

Interaction examples

Basic Reanimation

If no opponents have poison counters, you cast Geth's Summons for {2}{B}{B}. You target a single creature in your graveyard. When the spell resolves, that creature enters the battlefield under your control, and the sorcery is placed in your graveyard.

Clearing the Way

Toxic Deluge

You cast Toxic Deluge, paying enough life to destroy all creatures on the board. Afterward, if an opponent has three poison counters, you cast Geth's Summons. You can now target one creature that just died from your own graveyard and one creature that just died from that opponent's graveyard, returning both to the battlefield under your command.

Targeting Nuances

Victimize

Unlike Victimize, which requires you to sacrifice a creature as an additional cost and targets two cards in your own graveyard, Geth's Summons does not require a sacrifice. If you use Victimize to set up your graveyard with high-value targets, Geth's Summons can later be used to pull a third creature from your graveyard while simultaneously stealing an opponent's creature if the Corrupted condition is met.

Guide written with AI from the official text and rulings. Official English text prevails.