Brass-Talon Chimera

First strike
Sacrifice Brass-Talon Chimera: Put a +2/+2 counter on target Chimera creature. It gains first strike. (This effect lasts indefinitely.)

Island

Clay Statue

Icy Manipulator

{1}, {T}: Tap target artifact, creature, or land.

Mountain

Urza's Power Plant

{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.

Diabolic Machine

Havenwood Battleground

Havenwood Battleground enters tapped.
{T}: Add {G}.
{T}, Sacrifice Havenwood Battleground: Add {G}{G}.

Dragon Engine

{2}: Dragon Engine gets +1/+0 until end of turn.

Iron-Heart Chimera

Vigilance
Sacrifice Iron-Heart Chimera: Put a +2/+2 counter on target Chimera creature. It gains vigilance. (This effect lasts indefinitely.)

Tin-Wing Chimera

Flying
Sacrifice Tin-Wing Chimera: Put a +2/+2 counter on target Chimera creature. It gains flying. (This effect lasts indefinitely.)

Forest

Urza's Tower

{T}: Add {C}. If you control an Urza's Mine and an Urza's Power-Plant, add {C}{C}{C} instead.

Urza's Mine

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

Phyrexian Dreadnought

Trample
When Phyrexian Dreadnought enters, sacrifice it unless you sacrifice any number of creatures with total power 12 or greater.

Teeka's Dragon

Flying; trample; rampage 4 (Whenever this creature becomes blocked, it gets +4/+4 until end of turn for each creature blocking it beyond the first.)

Black Vise

As Black Vise enters, choose an opponent.
At the beginning of the chosen player's upkeep, Black Vise deals X damage to that player, where X is the number of cards in their hand minus 4.

Ivory Tower

At the beginning of your upkeep, you gain X life, where X is the number of cards in your hand minus 4.

Lead-Belly Chimera

Trample
Sacrifice Lead-Belly Chimera: Put a +2/+2 counter on target Chimera creature. It gains trample. (This effect lasts indefinitely.)