Join forces — Starting with you, each player may pay any amount of mana. Each player draws X cards, where X is the total amount of mana paid this way.

Create X tokens that are copies of target token you control. Then tokens you control gain indestructible until your next turn. You gain 1 life for each token you control.

Whenever a player casts a spell, that player discards a card.

You have hexproof. (You can't be the target of spells or abilities your opponents control.)
−2: Create a 0/3 white Wall creature token with defender.

When this creature enters, each player loses 3 life.
, : Search your library for a Mercenary permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

: Add .
, : Target creature can't be blocked this turn.

This artifact enters tapped.
: Add one mana of any color that a basic land you control could produce.

Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.

For each token you control, create a token that's a copy of that permanent.

Whenever another creature you control enters, you gain 1 life.

Flying
Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)
Lieutenant — As long as you control your commander, other creatures you control have melee.

Defender (This creature can't attack.)
Whenever this creature is dealt damage, you may create a token that's a copy of this creature.

Whenever you attack, you may pay and sacrifice an Aura attached to Three Dog. When you sacrifice an Aura this way, for each other attacking creature you control, create a token that's a copy of that Aura attached to that creature.

Sacrifice this creature: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

: Add .

Reach
Whenever this creature deals combat damage to a creature, put a -1/-1 counter on that creature.
Whenever you put one or more -1/-1 counters on a creature, each opponent loses 1 life and you gain 1 life.

Vigilance
Whenever Nelly Borca attacks, suspect target creature. Then goad all suspected creatures. (A suspected creature has menace and can't block.)
Whenever one or more creatures an opponent controls deal combat damage to one or more of your opponents, you and the controller of those creatures each draw a card.

Defender
: Creatures you control gain haste until end of turn.

: Add .
, : You get (an energy counter).
, , Pay X , Sacrifice this land: Destroy target nonland permanent with mana value X. Activate only as a sorcery.

Each player shuffles their hand and graveyard into their library, then draws seven cards. Exile Emergency Powers.
Addendum — If you cast this spell during your main phase, you may put a permanent card with mana value 7 or less from your hand onto the battlefield.