Big Bertha

Legendary Creature — Mutant Hero

Chosen commander for the requested strategy.

Artifact

Fast mana staple to pay for generic costs and Bertha's X cost

Artifact

Reliable low-cost mana acceleration

Sorcery

Early land ramp to boost future mana for X spells

Sorcery

Fetches a Forest untapped for immediate tempo

Sorcery

Fetches an untapped Forest to fuel large Bertha casts

Creature — Snake Shaman

Chump blocks early and accelerates land development

Sorcery

Provides land ramp onto the battlefield and ensures land drops

Sorcery — Arcane

Fixes land drops and develops mana for huge mana sinks

Creature — Elf Druid

Grows with Bertha and taps for enormous amounts of green mana

Creature — Elf Druid

Taps for three mana once it receives a +1/+1 counter

Creature — Spirit

Increases counter placement and produces mana equal to its power

Legendary Creature — Elf Scout

Produces massive bursts of mana based on Bertha's huge power

Instant

Draws a hand full of cards scaled to Bertha's enormous power

Sorcery

Draws cards equal to Bertha's power and casts a free spell

Enchantment

Draws when Bertha enters and provides crucial trample to tall threats

Instant

Draws cards equal to combat damage dealt by a massive Bertha

Enchantment

Emergency card draw engine in response to removal targeting Bertha

Enchantment

Provides repeatable card draw or counters for arriving creatures

Instant

Protects your modified creatures from wipes while refilling hand

Creature — Elf Artificer

Draws cards for each creature you control with +1/+1 counters

Creature — Elf Druid

Steady card draw trigger whenever you cast creature spells

Sorcery

Draws cards equal to Bertha's substantial power

Instant

Flexible instant-speed permanent removal for any problem piece

Enchantment — Aura

Neutralizes problematic enemy commanders and cantrips

Instant

Extremely efficient one-mana artifact or enchantment removal

Creature — Elf Shaman

Blinkable and tutorable artifact and enchantment destruction

Instant

One-sided creature removal that tramples excess damage to face

Instant

Cheap fight or bite effect leveraging Bertha's huge base power

Instant

Instant-speed bite spell to eliminate creatures or planeswalkers safely

Enchantment — Aura

Turns any threatening permanent into a harmless basic Forest

Sorcery

One-sided board wipe that creates an army of 4/4 Beasts

Creature — Ooze

Targeted graveyard hate that grows larger with +1/+1 counters

Enchantment

Increases every counter placed on Bertha and other creatures

Legendary Artifact

Passive counter addition plus an on-board counter-adding mana sink

Legendary Artifact

Stores Bertha's counters if she dies and transfers them back

Enchantment

Doubles all +1/+1 counters placed on creatures you control

Enchantment

Doubles counters Bertha enters with and doubles tap-ability counters

Enchantment

Doubles all +1/+1 counters placed on Bertha and allies

Legendary Creature — Phyrexian Praetor

Doubles your counter placement while halving your opponents'

Creature — Hydra

Doubles +1/+1 counters on every attacking creature every turn

Creature — Hydra

Grows rapidly into a massive trample threat whenever anyone casts spells

Creature — Elemental

Accumulates counters on every spell cast and distributes them to Bertha

Creature — Hydra

Exponentially doubles its own counters and tramples over blockers

Legendary Creature — Plant Druid

Places counters on landfall and doubles all counters on creatures

Legendary Creature — Spirit

Grants modified creatures trample and ramps lands on combat damage

Creature — Phyrexian Wurm

Provides mana discounts with Phyrexian mana and spreads counters

Creature — Human Warrior

Grows quickly and makes your entire board unblockable

Creature — Elf Druid

Proliferates counters on Bertha and your board with every land drop

Creature — Rhino Warrior

Plots to double the power of subsequent creatures via counters

Artifact Creature — Snake

Versatile X-cost beater with trample, reach, and protection from multicolored

Artifact Creature — Construct

Converts excess mana and counters into direct targeted damage

Artifact Creature — Construct

Scalable X-spell threat that leaves behind a swarm of Thopters upon death

Creature — Hydra

Adds extra counters to targets and redistributes them as needed

Creature — Hydra

Flexible X Hydra that can double its counters or act as spot removal

Instant

Protects Bertha and key pieces with hexproof and indestructible

Instant

One-mana protection against targeted exile and destruction effects

Instant

Protective combat trick that can pump Bertha to lethal sizes

Artifact — Equipment

Grants hexproof and haste to activate tap abilities right away

Artifact — Equipment

Zero-equip protection and haste enabler

Legendary Artifact — Equipment

Provides trample, lifelink, and strips opponent hexproof and indestructible

Creature — Spirit

Untaps Bertha on each opponent's turn to repeat her counter ability

Artifact

Allows Bertha to tap immediately and untaps her for extra growth

Land

No maximum hand size.

Land

Card draw from the mana base.

Land

Makes a creature unblockable.

Land

Extra mana in the late game.

Land

Mono-color utility land.

Basic Land — Forest

Basic land allocated from mana pip counts.