Super lundi

{T}: Add {C}. {T}: Add one mana of any color that shares a color with a permanent a player controls. {2}, {T}, Sacrifice this land: You gain 3 life.

Reach, defender Commander spells you cast cost {1} less to cast. Whenever you cast a commander spell, create X 1/1 Stained Glass artifact creature ...

Megasunburst (This enters the battlefield with two +1/+1 counters on it for each color of mana spent to cast it) Remove three +1/+1 counters from S...

For Segovia! (When this Equipment enters the battlefield, create a -1/-1 blue Squid creature token, then attach this to it. Yes, it's a -1/-1 creat...

Whenever one or more creatures die, put a charge counter on Simic Slaw. {2}, Sacrifice Simic Slaw: Draw X cards and gain X life, where X is the num...

Affinity for Affinity (This card costs {1} less to cast for each permanent you control with affinity.) Affinitycycling {2} ({2}, Discard this card:...

Changeling {T}, Sacrifice this artifact: Add one mana of any color. Whenever you pay an additional cost while casting a spell, you may return this ...

Ward—You get two poison counters. Annihilator X, where X is the total number of poison counters your opponents have. When you cast That Which Was C...

{T}: Add {G}{G}. Whenever a nontoken creature enters the battlefield under your control, put a +1/+1 counter on it.

Equipped creature has +2/+2 and has protection from Aliens, Birds, Eldrazi, Lizards, Mutants, Robots, Yetis, and hybrid mana. Whenever equipped cre...

Equipped creature gets +1/+1. {2}, {T}, Sacrifice Toe-Breaking Helmet: Put two -1/-1 counters on target creature. Activate only as a sorcery. Equip...

If you're on the Mirran team, Unclaimed Battle Axe costs {2} more to cast and has For Mirrodin! If you're on the Phyrexian team, Unclaimed Battle A...

If you're on the Mirran team, this card costs {1} less to cast. If you're on the Phyrexian team, the colored mana symbols in Unclaimed Tanadon's ma...

Hexproof from red {T}: Add {C}. {7}, {T}: Create two Food tokens named Hot Dog. Whenever you sacrifice a Hot Dog, create a Treasure token. Food Cre...

Your Mana Rock enters the battlefield tapped. During deckbuilding, write two different colors on Your Mana Rock. {T}: Add one mana of a color writt...

When this creature dies, add {C}{C}{C}.

{1}, Sacrifice a permanent: You gain 1 life.

{3}, {T}, Sacrifice this artifact: Return all enchantment cards from your graveyard to your hand.

{3}, {T}: Put a +1/+1 counter on target creature.

You may choose not to untap this artifact during your untap step. {2}, {T}: Target creature gets +0/+3 for as long as this artifact remains tapped.

{0}: This creature gets -1/-1 and gains flying until end of turn.

Defender (This creature can't attack.) {3}: This creature gets +3/-1 until end of turn and can attack this turn as though it didn't have defender. ...

{2}, {T}, Sacrifice this artifact: Destroy target attacking creature without flying. It can't be regenerated.

At the beginning of your upkeep, you may add {C}{C}. You can't spend this mana to cast spells.