Reach

: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)

When Arbor Colossus becomes monstrous, destroy target creature with flying an opponent controls.

, Sacrifice Bloodfire Colossus: It deals 6 damage to each creature and each player.

Collision deals 6 damage to target creature with flying.

When Colossal Badger enters, you gain 3 life.

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

Strive — This spell costs more to cast for each target beyond the first.

Any number of target creatures each get +2/+2 until end of turn. Untap those creatures.

Target creature gets +4/+2 and gains trample until end of turn.

Colossal Rattlewurm has flash as long as you control a Desert.

Trample

, Exile Colossal Rattlewurm from your graveyard: Search your library for a Desert card, put it onto the battlefield tapped, then shuffle.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

Whenever Colossal Whale attacks, you may exile target creature defending player controls until Colossal Whale leaves the battlefield. (That creature returns under its owner's control.)

Enchant creature

When Colossification enters, tap enchanted creature.

Enchanted creature gets +20/+20.

Target creature gets +4/+2 and gains trample until end of turn.

Defender, indestructible

: Monstrosity 10. (If this creature isn't monstrous, put ten +1/+1 counters on it and it becomes monstrous.)

As long as Colossus of Akros is monstrous, it has trample and can attack as though it didn't have defender.

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

When Crumbling Colossus attacks, sacrifice it at end of combat.

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

Indestructible (Damage and effects that say "destroy" don't destroy this creature.)

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

Choose target creature. Mill four cards, then put a +1/+1 counter on that creature for each creature card milled this way.

Tap an untapped Wizard you control: Return target nonland permanent you don't control to its owner's hand.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

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.

Flying, vigilance, trample

Whenever you attack, other creatures you control get +2/+2 and gain indestructible until end of turn.

Unearth—Pay eight . (Pay eight energy counters: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Trample

You may cast creature cards from your hand as though they were the card Colossal Dreadmaw. (They become Colossal Dreadmaws.)

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.)

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Worldsoul Colossus enters with X +1/+1 counters on it.