If an artifact or creature entering causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

This land enters tapped unless you control a Mountain or a Plains.
: Add or .

(: Add .)

When this creature enters, each player sacrifices a creature of their choice.

At the beginning of your upkeep, if you have no cards in hand, sacrifice this enchantment and target opponent discards their hand.

Other Villains you control get +2/+2.
Your maximum hand size is eight.
At the beginning of your end step, if you have fewer than eight cards in hand, draw cards equal to the difference.

Crackle with Power deals five times X damage to each of up to X targets.

Menace
When this creature enters, target opponent reveals their hand. You choose a nonland card from it. That player discards that card.
Evoke—Exile a black card from your hand.

Flying
When Galazeth Prismari enters, create a Treasure token.
Artifacts you control have ": Add one mana of any color. Spend this mana only to cast an instant or sorcery spell."

You may pay rather than pay this spell's mana cost.
If the cost was paid, an opponent draws a card.
Exile target creature or planeswalker.

For each of X target permanents, create X tokens that are copies of that permanent.

You may activate loyalty abilities of Teferi on any player's turn any time you could cast an instant.
+1: Draw a card, then discard a card.
−3: Target creature you don't control phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.)
−10: Take two extra turns after this one.

You may activate loyalty abilities of Teferi on any player's turn any time you could cast an instant.
+1: Draw a card, then discard a card.
−3: Target creature you don't control phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.)
−10: Take two extra turns after this one.

: Add one mana of any color that a land an opponent controls could produce.

When this creature enters, search your library for a Forest card, put that card onto the battlefield, then shuffle.

If this card is in your opening hand, you may begin the game with it on the battlefield.
Equipped creature gets +1/+1 and has double strike and trample.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Whenever this creature blocks or becomes blocked by a creature, that creature gains wither until end of turn. (It deals damage to creatures in the form of -1/-1 counters.)
Whenever this creature deals damage to an opponent, remove all -1/-1 counters from it.

This land enters tapped unless you control a Swamp.
: Add .
, : Target creature you control connives X, where X is the number of creatures that died this turn. (Draw X cards, then discard X cards. Put a +1/+1 counter on that creature for each nonland card discarded this way.)

Whenever you cast a noncreature spell, put a +1/+1 counter on this creature.

, , Sacrifice this artifact: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.