Sacrifice this creature: Return target legendary creature card from your graveyard to the battlefield. Activate only during your turn, before attackers are declared.

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.

Cumulative upkeep—Add . (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

, : Tap all other artifacts. They don't untap during their controllers' untap steps for as long as this artifact remains tapped.

Choose one —
• Counter target spell if it's blue.
• Destroy target permanent if it's blue.

Equipped creature gets +2/+2 and has protection from black and from green.
Whenever equipped creature deals combat damage to a player, that player discards a card and you untap all lands you control.
Equip

Each player may put an artifact, creature, enchantment, or land card from their hand onto the battlefield.

You may sacrifice a nontoken red creature rather than pay this spell's mana cost.
Copy target instant or sorcery spell. You may choose new targets for the copy.

+1: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle.
−3: Target creature gets +X/+X or -X/-X until end of turn, where X is the number of Swamps you control.
−6: You get an emblem with "Swamps you control have ': Add .'"

Equipped creature gets +2/+2 and has protection from black and from green.
Whenever equipped creature deals combat damage to a player, that player discards a card and you untap all lands you control.
Equip

Landfall — Whenever a land you control enters, put a +1/+1 counter on target creature.
: Double the number of +1/+1 counters on each creature you control.

Flying, deathtouch
Whenever an opponent loses life, you gain that much life. (Damage causes loss of life.)

Equipped creature gets +1/-1.
Whenever equipped creature dies, draw two cards.
Equip

Flying
This creature enters with three +1/+1 counters on it.
At the beginning of your upkeep, you may remove any number of +1/+1 counters from this creature. If you do, create that many 1/1 colorless Tetravite artifact creature tokens. They each have flying and "This token can't be enchanted."
At the beginning of your upkeep, you may exile any number of tokens created with this creature. If you do, put that many +1/+1 counters on this creature.

, : Look at the top four cards of your library. You may reveal an artifact card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
: Transform Tony Stark. Activate only as a sorcery.

, Pay 1 life, Sacrifice this land: Search your library for an Island or Mountain card, put it onto the battlefield, then shuffle.

Flash
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.)
Double strike
Other tapped creatures you control have hexproof.

Sneak (You may cast this spell for if you also return an unblocked attacker you control to hand during the declare blockers step. She enters tapped and attacking.)
When Elektra enters, destroy target creature an opponent controls with power 3 or less.

Enrage — Whenever this creature is dealt damage, create a token that's a copy of this creature.

You may have Sakashima enter as a copy of another creature you control, except it has Sakashima's other abilities.
The "legend rule" doesn't apply to permanents you control.
Partner (You can have two commanders if both have partner.)