Psychatog in Premodern: the kill-size calculation and building to the kill turn

What it does

Psychatog is a three-mana black-blue 1/2 creature with two abilities: discard a card to give it +1/+1 until end of turn, and remove two cards in your graveyard from the game to give it +1/+1 until end of turn. Both abilities can be activated any number of times before or during combat. In the late game, with a full graveyard and several cards in hand, Psychatog attacks as a 15/16 or larger. The archetype built around Psychatog is a control deck that uses the first ten or twelve turns to fill the graveyard, then converts all that spent mana into a one-turn lethal attack.

When it’s played

Psychatog is the singular win condition of the Psychatog archetype.

The Psychatog deck runs blue and black interaction — Counterspell, Force Spike, Brainstorm, Duress, Cabal Therapy — to stabilize the game through the first dozen turns, then uses all accumulated resources (hand cards, graveyard cards) to make Psychatog unblockably large in a single attack step.

The math / interaction worth knowing

The kill calculation. If you have seven cards in hand and sixteen cards in your graveyard, Psychatog can become: 7 (hand discards) + 8 (sixteen graveyard removes at +1/+1 per two) = 15/16 for a turn (1 base + 15 = 16/17). Lethal against a 20-life opponent with no blockers requires the Psychatog to attack for 20 — so with a 1/2 baseline, you need 19 additional power. Seven cards in hand plus a fifteen-card graveyard equals 7 + 7 = 14, for a 15/15 Psychatog. You need at least nineteen cards total (hand plus half of graveyard) to reach exactly lethal. This is why Psychatog lists run twenty-four or more instants and sorceries that go to the graveyard — each spell cast builds toward the kill threshold.

The kill turn requires clear attack lane. Psychatog is a 1/2 base — it trades with almost any blocker. On the kill turn, you must either clear the opponent’s blockers before attacking (with removal or counters), or have enough Psychatog to trample through (which Psychatog doesn’t have). The standard play: on your main phase, cast or respond to the opponent’s final plays, then on your second main phase (after passing priority in your pre-combat), attack with Psychatog, then in the “declare attackers” step or “after blockers declared” step, activate Psychatog to lethal. The key timing: activating Psychatog during combat to pump it is an instant-speed response, so the opponent can attempt to remove it after you pump — you need to activate to lethal in a single activation pass.

Psychatog + Brainstorm setup. One common sequence: end of opponent’s turn, cast Brainstorm, put two cards on top. On your turn, draw into those cards, cast them, or hold them. Attack with Psychatog, activate using the graveyard cards plus hand to reach lethal. Brainstorm’s top-of-library placement lets you “store” cards for the kill turn while the graveyard accumulates.

Decklists worth studying

When deck data populates, look for Psychatog lists from MTGO Premodern Challenges. The canonical list runs a full counter suite and the complete Brainstorm-Cabal Therapy package for maximum graveyard depth.

Related cards

• Brainstorm — The primary cantrip that feeds the graveyard and sculpts the kill hand.
• Counterspell — The control backbone that protects Psychatog through the first twelve turns.
• Force Spike — Early disruption in the counter suite.
• Cabal Therapy — Black disruption that fills the graveyard while stripping opponent’s key spells.
• Duress — Pairs with Cabal Therapy for maximum disruption and graveyard depth.
• Memory Lapse — Tempo counter that extends the game long enough for Psychatog’s graveyard to fill.