Trample, infect, indestructible

If Blightsteel Colossus would be put into a graveyard from anywhere, reveal Blightsteel Colossus and shuffle it into its owner's library instead.

Changeling (This card is every creature type.)

Protection from black

: Chameleon Colossus gets +X/+X until end of turn, where X is its power.

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

: Colos Yearling gets +1/+0 until end of turn.

When Colossal Badger enters the battlefield, you gain 3 life.

Kicker (You may pay an additional as you cast this spell.)

Target creature gets +3/+3 until end of turn. If this spell was kicked, instead that creature gets +4/+4 and gains trample and haste until end of turn.

At the beginning of your upkeep, if you control a creature with power 4 or greater, draw a card.

Whenever Colossal Plow attacks, add and you gain 3 life. Until end of turn, you don't lose this mana as steps and phases end.

Crew 6 (Tap any number of creatures you control with total power 6 or more: This Vehicle becomes an artifact creature until end of turn.)

Flying, ward

Channel — , Discard Colossal Skyturtle: Return target card from your graveyard to your hand.

Channel — , Discard Colossal Skyturtle: Return target creature to its owner's hand.

Equipped creature gets +10/+10 and loses flying.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Colossus of Sardia doesn't untap during your untap step.

: Untap Colossus of Sardia. Activate only during your upkeep.

Trample

Cultivator Colossus's power and toughness are each equal to the number of lands you control.

When Cultivator Colossus enters the battlefield, you may put a land card from your hand onto the battlefield tapped. If you do, draw a card and repeat this process.

Depth Charge Colossus doesn't untap during your untap step.

: Untap Depth Charge Colossus.

//PRT-Prototype_Mech//

Prototype (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

6/6

Diregraf Colossus enters the battlefield with a +1/+1 counter on it for each Zombie card in your graveyard.

Whenever you cast a Zombie spell, create a tapped 2/2 black Zombie creature token.

This spell costs less to cast for each Gate you control.

Gate Colossus can't be blocked by creatures with power 2 or less.

Whenever a Gate enters the battlefield under your control, you may put Gate Colossus from your graveyard on top of your library.

When Landscaper Colos enters the battlefield, put target card from an opponent's graveyard on the bottom of their library.

Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

This spell costs less to cast, where X is the total mana value of noncreature artifacts you control.

Sacrifice two artifacts: Return Metalwork Colossus from your graveyard to your hand.

Renown 6 (When this creature deals combat damage to a player, if it isn't renowned, put six +1/+1 counters on it and it becomes renowned.)

Outland Colossus can't be blocked by more than one creature.

Phyrexian Colossus doesn't untap during your untap step.

Pay 8 life: Untap Phyrexian Colossus.

Phyrexian Colossus can't be blocked except by three or more creatures.

This spell costs less to cast for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

Trample, haste

Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)

Haste