: Add .
Sacrifice this artifact: Add .

Colorless Eldrazi spells you cast cost less to cast.
, : Search your library for a colorless creature card, reveal it, put it into your hand, then shuffle.

When Eye of Vecna enters, you draw a card and you lose 2 life.
At the beginning of your upkeep, you may pay . If you do, you draw a card and you lose 2 life.

, , Sacrifice a creature: Reveal a number of cards from the top of your library equal to the sacrificed creature's power. Put one into your hand and exile the rest.

, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Then if you control four or more lands, untap that land.

, : Creatures you control gain landwalk until end of turn.

Whenever you get one or more (energy counters), put a +1/+1 counter on target creature you control.
, : You get .

Changeling
When Faceless Agent enters, seek a creature card of the most prevalent creature type in your library.

: Add .
: This land becomes a 4/3 creature with vigilance and all creature types until end of turn. It's still a land.

If Faceless One is your commander, choose a color before the game begins. Faceless One is the chosen color.
Choose a Background (You can have a Background as a second commander.)

Whenever you crank Faerie Aerie, create two 1/1 blue Faerie Spy creature tokens with flying, haste, and "Whenever this creature deals combat damage to a player, draw a card." Exile them at the beginning of the next end step.

This land enters tapped.
: Add .
: This land becomes a 2/1 blue Faerie creature with flying until end of turn. It's still a land.

Prototype — 1/3
Flying
: This creature gets +1/+0 until end of turn.

This artifact enters tapped.
Creatures enter tapped.
, , Exile this artifact: Exile all untapped creatures. Activate only as a sorcery.

Names — Familiar / Beeble / Mascot
Art — Candy apple / Chicken hat / Totally Lost's Fblthp
2 — Whenever this creature attacks, untap target permanent.
4 — Whenever a creature you control enters, creatures you control get +1/+1 until end of turn.
2 — 2/3
3 — 5/3

: Target black creature gains wither until end of turn.