Tap X target creatures. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Sacrifice another creature: Regenerate this creature. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Haste
Whenever this creature attacks, for each opponent, you create a 2/2 green Boar creature token that's tapped and attacking that opponent.

Enchant creature
Enchanted creature gets +0/+4.
Umbra armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)

: Exile target creature card from a graveyard. Create a 1/1 green Saproling creature token.

Look at the top three cards of your library. You may reveal a creature or land card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

, Mill a card: Add . (Activate only as an instant. To mill a card, put the top card of your library into your graveyard.)

Shuffle your library, then exile the top four cards. You may cast any number of spells with mana value 5 or less from among them without paying their mana costs. Lands you control don't untap during your next untap step.

Whenever you discard one or more land cards, each opponent loses 2 life.
At the beginning of combat on your turn, target Villain you control gains menace until end of turn. It connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on that creature.)

Partner with Amy Pond
First strike, lifelink
The Last Centurion — When you cast this spell from anywhere other than exile, exile it with three time counters on it. It gains suspend. Then investigate. (Create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")

Flying
: This creature gains haste until end of turn.

Defender
When this creature enters, create a 1/1 white Bird creature token with flying for each creature with defender you control.
Whenever another creature you control with defender enters, create a 1/1 white Bird creature token with flying.

Reach
As long as you control ten or more lands, creatures you control get +2/+2.
Whenever this creature or another creature you control with toughness greater than its power enters, look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. Otherwise, put it into your hand.

When this creature enters, return target nonland permanent to its owner's hand.
Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Trample
Threshold — : Regenerate this creature. Activate only if there are seven or more cards in your graveyard.

Lifelink
Whenever an enchanted creature dies, draw a card for each Aura you controlled that was attached to it.

Hidden agenda (Start the game with this conspiracy face down in the command zone and secretly choose a card name. You may turn this conspiracy face up any time and reveal that name.)
Whenever you cast an instant or sorcery spell with the chosen name, you may draw a card.

Lands target player controls don't untap during their next untap step.

Vigilance
When this creature enters, gain control of up to one target creature with lesser power for as long as you control this creature. Then the Ring tempts you.

Mendicant Core's power is equal to the number of artifacts you control.
Start your engines! (If you have no speed, it starts at 1. It increases once on each of your turns when an opponent loses life. Max speed is 4.)
Max speed — Whenever you cast an artifact spell, you may pay . If you do, copy it. (The copy becomes a token.)