What is the Prototype mechanic on Rootwire Amalgam?

Prototype allows you to cast this spell with a different mana cost, color, and size than printed. You may cast Rootwire Amalgam as a 5/5 Artifact Creature for {5} or a 2/3 Artifact Creature for {1}{G}, keeping its abilities in either state.

What are the stats for Rootwire Amalgam?

As a Mythic Rare Artifact Creature — Golem, Rootwire Amalgam has a printed mana value of 5. When cast at its base cost, it is a 5/5. When cast with the prototype cost of {1}{G}, it is a 2/3.

Which set does Card #203p belong to?

Rootwire Amalgam is part of The Brothers' War Promos subset from 2022. It is a promo card in the Magic: The Gathering trading card game, distinct from the main set release.

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Reference artwork · details may differ from this copy

PROMO

About This Card

The 2022 The Brothers' War Promo Rootwire Amalgam (Card #203p) is a Mythic Rare Artifact Creature Golem featuring Prototype mechanics and art by Leon Tukker.

Rootwire Amalgam

2022 • Magic: The Gathering • The Brothers' War Promos

2022 Magic: The Gathering The Brothers' War Promos

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Market Value

Raw/Ungraded Market: $0.77

Updated 2 days ago

Based on TCGplayer Market (reference)Last Updated Oct 17, 2026Check Price Guide

Market & Price History

Condition	Value	Source	Trend	Price Details
	$0.77Oct 17, 2026	Guide Estimate	0%
Based on TCGplayer Market (reference) Estimate: $0.77, based on Guide Estimate. Source date not availableCaptured Oct 17, 2026 Guide Estimate: $0.77. Evidence date not available. Few comparable observations are available, so this estimate may be less reliable. Over the last 30 days, stored prices ranged from $0.77 to $0.77 across 2 capture days. Change between Oct 3, 2026 and Oct 17, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.

$0.77Oct 17, 2026
Source
Guide Estimate
Trend
0%
Price Details
Based on TCGplayer Market (reference)
Estimate: $0.77, based on Guide Estimate.
Source date not availableCaptured Oct 17, 2026
Guide Estimate: $0.77. Evidence date not available.
Few comparable observations are available, so this estimate may be less reliable.
Over the last 30 days, stored prices ranged from $0.77 to $0.77 across 2 capture days. Change between Oct 3, 2026 and Oct 17, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.

30-day Price History

Raw / Ungraded

TCGplayer Market (reference) · Guide Estimate evidence · captured Oct 17, 2026

Each point is the last stored observation that day for this printing, condition, grader, autograph status and source. Gaps mean no observation; guide estimates and asking prices are not completed sales.

Product Overview

Description

The 2022 The Brothers' War Promo Rootwire Amalgam (Card #203p) is a Mythic Rare Artifact Creature — Golem in the Magic: The Gathering trading card game. Designed by Leon Tukker, this card utilizes the Prototype mechanic, allowing players to cast it with either its base {5} mana cost for a 5/5 body or a reduced {1}{G} cost for a 2/3 body. This flexibility defines the card's strategic identity within The Brothers' War Promos subset. Rootwire Amalgam belongs to the green color identity and functions as an artifact creature. Its ability allows for a sorcery-speed sacrifice effect: paying {3}{G}{G} to create a colorless Golem artifact creature token. The token's power and toughness are determined by three times the sacrificed creature's power, granting it haste until the end of the turn. This interaction makes the card a potent tool for board presence in Magic: The Gathering gameplay. Collectors of Magic: The Gathering often target promo cards from specific sets like The Brothers' War for their distinct distribution and design. Rootwire Amalgam's card number, 203p, places it within this promotional framework. The prototype layout allows for varied playstyles, appealing to players who enjoy adaptable strategies in their decks. The combination of its Mythic Rare status, unique mechanical design, and promotional origin makes Rootwire Amalgam a distinct entry in the Magic: The Gathering catalog.

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Product Specs

Card Details

The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.

Catalog Profile

The core identity of the card within the set.

Year

2022

Brand

Magic: The Gathering

Series

The Brothers' War Promos

Card Number

#203p

Featured Subject

The subject, team, league, and sport context tied to this card.

Featured

Rootwire Amalgam

Game

Magic: The Gathering

TCG Attributes

Rarity, print treatment, and game-specific stats for this card.

Rarity

Mythic Rare

Artist

Leon Tukker

Material

Card Stock

Language

English

Mana cost

{5}

Type

Artifact Creature — Golem

Power / Toughness

5 / 5

Card Text

Abilities, attacks, oracle text, and flavor text printed on the card.

Prototype {1}{G} — 2/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.) {3}{G}{G}, Sacrifice this creature: Create an X/X colorless Golem artifact creature token, where X is three times this creature's power. It gains haste until end of turn. Activate only as a sorcery.