During your turn, spells your opponents cast cost more to cast and abilities your opponents activate cost more to activate unless they're mana abilities.
Afterlife 1

First strike, protection from red
When Tivadar enters, destroy target Goblin.

When Toby enters, create a 4/4 white Beast creature token with "This token can't attack or block alone."
As long as you control four or more creature tokens, creature tokens you control have flying.

Creatures entering don't cause abilities to trigger.

Flying
Lands on the battlefield and land cards in graveyards can't be the targets of spells or abilities your opponents control.
Your opponents can't play land cards from graveyards.

Flying
Planeswalkers you control have "No more than one creature can attack this planeswalker each combat."
: Target creature with a +1/+1 counter on it gains flying until end of turn.

, , Discard a card: Target player gains 3 life.

When this creature dies, the Ring tempts you.

At the beginning of combat on your turn, if you control an artifact, this creature gets +2/+1 until end of turn. If you control three or more artifacts, it also gains first strike until end of turn.

Vigilance
Renown 1

Flying
When this creature enters, tap target creature an opponent controls.
Delirium — At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, tap target creature that player controls.

Vigilance
Soulshift 4

When this creature enters, you may search your library for an Aura card, reveal it, put it into your hand, then shuffle.

Flying
When this creature enters, target creature you control gets +2/+0 until end of turn.

, Tap an untapped creature you control: Transform this creature.

Whenever this creature blocks, it gets +0/+2 until end of turn.

At the beginning of your upkeep, put a currency counter on this creature.
Remove two currency counters from this creature: Untap target basic land. Activate only during an opponent's upkeep.

, Sacrifice this creature: Return target enchantment card from your graveyard to your hand.

Whenever this creature attacks while saddled, it gains first strike until end of turn. Scry 1.
Saddle 2

Discard a card: Prevent all damage that would be dealt to this creature this turn.

Level up

, : Put a trap counter on target land you control.
Sacrifice a land with a trap counter on it: This creature deals 3 damage to target attacking creature without flying.

: Target unblocked attacking creature becomes blocked. Activate only during combat after blockers are declared. (This ability works on creatures that can't be blocked.)

Flying
Trapeze Artist enters by being flipped from a height of at least one foot (about 0.3 meters). If it lands face down or didn't turn over completely at least once during the flip, return it to its owner's hand.

Enrage — Whenever this creature is dealt damage, exile target creature an opponent controls until this creature leaves the battlefield.

: Target creature gets +1/+0 until end of turn. You gain 1 life. Activate only as a sorcery.

When this creature enters, you may return target artifact card from your graveyard to your hand.