Awesome Monday

If one or more +1/+1 counters would be put on a creature you control, twice that many +1/+1 counters are put on it instead.

Whenever a creature blocks, that creature's controller loses 1 life. {1}{B}{R}: Regenerate Carnage Gladiator.

Choose one — • Boros Charm deals 4 damage to target player or planeswalker. • Permanents you control gain indestructible until end of turn. • Targe...

Trample Bloodrush — {R}{G}, Discard Ghor-Clan Rampager: Target attacking creature gets +4/+4 and gains trample until end of turn.

When you cast this spell, you may return target creature card from your graveyard to the battlefield. Annihilator 2 (Whenever this creature attacks...

{1}{W}: Target creature you control gains lifelink until end of turn. (Damage dealt by the creature also causes its controller to gain that much li...

Blightning deals 3 damage to target player or planeswalker. That player or that planeswalker's controller discards two cards.

Outlast {W} ({W}, {T}: Put a +1/+1 counter on this creature. Outlast only as a sorcery.) Each creature you control with a +1/+1 counter on it has l...

Counter target noncreature spell. Its controller loses 2 life.

Whenever Jackal Pup is dealt damage, it deals that much damage to you.

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...

When Hidden Horror enters the battlefield, sacrifice it unless you discard a creature card.

Changeling

Fertilid enters the battlefield with two +1/+1 counters on it. {1}{G}, Remove a +1/+1 counter from Fertilid: Target player searches their library f...

Flying {3}{W}, Sacrifice another artifact: Aerial Toastmaster assembles a Contraption. (Put the top card of your Contraption deck face up onto one ...

Exile target attacking creature. Then remove it from the game. Then put it into the absolutely-removed-from-the-freaking-game-forever zone.

All Sliver creatures have poisonous 1. (Whenever a Sliver deals combat damage to a player, that player gets a poison counter. A player with ten or ...

Search your library for up to three creature cards, put them into your graveyard, then shuffle.

Other creatures you control get +1/+1.

All Slivers have "{3}, Sacrifice this permanent: Destroy target permanent."

This creature's power and toughness are each equal to the number of creatures you control.

Partner with Impetuous Protege (When this creature enters the battlefield, target player may put Impetuous Protege into their hand from their libra...

Flying