Battering Wurm

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters with a +1/+1 counter on it.)
Creatures with power less than this creature's power can't block it.

Guardian's Magemark

Flash
Enchant creature
Creatures you control that are enchanted get +1/+1.

Beastmaster's Magemark

Enchant creature
Creatures you control that are enchanted get +1/+1.
Whenever a creature you control that's enchanted becomes blocked, it gets +1/+1 until end of turn for each creature blocking it.

Bioplasm

Whenever this creature attacks, exile the top card of your library. If it's a creature card, this creature gets +X/+Y until end of turn, where X is the exiled creature card's power and Y is its toughness.

Crash Landing

Target creature with flying loses flying until end of turn. Crash Landing deals damage to that creature equal to the number of Forests you control.

Dryad Sophisticate

Nonbasic landwalk (This creature can't be blocked as long as defending player controls a nonbasic land.)

Earth Surge

Each land gets +2/+2 as long as it's a creature.

Gatherer of Graces

This creature gets +1/+1 for each Aura attached to it.
Sacrifice an Aura: Regenerate this creature.

Ghor-Clan Savage

Bloodthirst 3 (If an opponent was dealt damage this turn, this creature enters with three +1/+1 counters on it.)

Gristleback

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters with a +1/+1 counter on it.)
Sacrifice this creature: You gain life equal to this creature's power.

Gruul Nodorog

{R}: This creature gains menace until end of turn. (It can't be blocked except by two or more creatures.)

Gruul Scrapper

When this creature enters, if {R} was spent to cast it, it gains haste until end of turn.

Harrier Griffin

Flying
At the beginning of your upkeep, tap target creature.

Leyline of Lifeforce

If this card is in your opening hand, you may begin the game with it on the battlefield.
Creature spells can't be countered.

Petrified Wood-Kin

This spell can't be countered.
Bloodthirst X (This creature enters with X +1/+1 counters on it, where X is the damage dealt to your opponents this turn.)
Protection from instants

Predatory Focus

You may have creatures you control assign their combat damage this turn as though they weren't blocked.

Guildpact