Multi-Copy Package

Build decks that run many copies of a single card-type — Relentless Rats, Shadowborn Apostles, and more.

Overview

Some Magic cards have a printed exception allowing any number of copies in a Commander deck. The Multi-Copy Package feature lets you include a chosen archetype card at a configured count and builds the rest of the deck around it.

Enable with ALLOW_MUST_HAVES=1 (default: on). The Enable Multi-Copy package checkbox appears in the New Deck modal preferences section.

How It Works

  1. Check Enable Multi-Copy package in the New Deck modal.
  2. When you add an eligible card to Must Include, a count picker dialog appears. Set the number of copies.
  3. The builder reserves those slots for the archetype card before filling the rest of the deck from the theme pool.
  4. The multi-copy card is locked automatically and appears in Step 5 alongside the rest of the build.

The builder auto-suggests the dialog when your commander's theme tags match the archetype's trigger conditions. You can also manually add any eligible card via the quick-add input and set a count freely.

Supported Archetypes

Card Color Cap Theme triggers
Cid, Timeless Artificer W/U None (20–30 suggested) artificer kindred, artifacts matter
Dragon's Approach R None (20–30 suggested) burn, spellslinger, storm, copy
Hare Apparent W None (20–30 suggested) rabbit kindred, tokens matter
Nazgûl B 9 (printed cap) wraith kindred, ring, amass
Persistent Petitioners U None (20–30 suggested) mill, advisor kindred, control
Rat Colony B None (20–30 suggested) rats, swarm, aristocrats
Relentless Rats B None (20–30 suggested) rats, swarm, aristocrats
Seven Dwarves R 7 (printed cap) dwarf kindred, treasure, equipment
Shadowborn Apostle B None (20–30 suggested) demon kindred, aristocrats, sacrifice
Slime Against Humanity G None (20–30 suggested) tokens, mill, graveyard, domain
Tempest Hawk W None (20–30 suggested) bird kindred, aggro
Templar Knight W None (20–30 suggested) human kindred, knight kindred

Cards with a printed cap (Nazgûl: 9, Seven Dwarves: 7) cannot exceed their cap — the count picker enforces the maximum.

Exclusive Groups

Rat Colony and Relentless Rats are mutually exclusive — they share the rats exclusive group. If both are added, a dialog will prompt you to choose one. Only one rat archetype can be active per build.

Count Recommendations

For uncapped archetypes, the suggested range is 20–30 copies. This leaves room for a commander, support spells, and lands in a 100-card deck. The sweet spot is often 20–25 copies, which allows ~15–20 support cards and ~35 lands.

Archetypes with many synergy triggers (Shadowborn Apostle, Relentless Rats) can push toward 30 when the commander specifically supports the archetype.

Bracket Interaction

High copy counts of powerful archetypes can affect bracket compliance:

  • Thrumming Stone (which many of these archetypes synergise with) is a Game Changer — using it in Bracket 2 or below will trigger a compliance warning.
  • The archetype cards themselves are generally not on the Game Changers list, but check the compliance report in Step 5 after building.

Headless / CLI

Set the multi-copy card and count in your JSON config via the must_include list. The count picker is a UI affordance — in headless mode, add the card name the desired number of times:

{
  "must_include": [
    "Relentless Rats", "Relentless Rats", "Relentless Rats",
    "Relentless Rats", "Relentless Rats"
  ]
}

FAQ

Why doesn't the count picker appear when I add a multi-copy card?
The auto-suggest only triggers when your commander's theme tags match the archetype's trigger conditions. If you don't see the dialog, try adding the card manually via the quick-add input — the dialog will appear for recognized archetype names regardless of commander.

Can I run a multi-copy package with owned_only mode?
Yes, but you need that many copies of the card in your owned card library. The builder will include the configured count regardless of owned status for Must Include cards — they bypass the owned filter.

Will the multi-copy card count toward my ideal creature or spell count?
Yes. Multi-copy creature archetypes (e.g., Relentless Rats) count toward the creature ideal, and non-creature archetypes (e.g., Dragon's Approach) count toward the spell ideal. Adjust your ideal counts in Step 6 accordingly.

See Also