Keyword: Landfall

Landfall — Whenever a land you control enters, create a 5/5 red and green Elemental creature token.
Whenever Omnath, Locus of Rage or another Elemental you control dies, Omnath deals 3 damage to any target.

Trample
Landfall — Whenever a land you control enters, put a +1/+1 counter on Oran-Rief Hydra. If that land is a Forest, put two +1/+1 counters on Oran-Rief Hydra instead.

Landfall — Whenever a land you control enters, Snapping Gnarlid gets +1/+1 until end of turn.

Landfall — Whenever a land you control enters, choose one —
• Put a +1/+1 counter on target creature.
• You gain 2 life.

When Avenger of Zendikar enters, create a 0/1 green Plant creature token for each land you control.
Landfall — Whenever a land you control enters, you may put a +1/+1 counter on each Plant creature you control.

Landfall — Whenever a land you control enters, you may pay . If you do, draw a card.

Landfall — Whenever a land you control enters, Territorial Baloth gets +2/+2 until end of turn.

Landfall — Whenever a land you control enters, you may gain 2 life.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Landfall — Whenever a land you control enters, you may have target creature block Turntimber Basilisk this turn if able.

Target creature gets +2/+2 until end of turn.
Landfall — If you had a land enter the battlefield under your control this turn, that creature gets +4/+4 until end of turn instead.

Landfall — Whenever a land you control enters, you may put a quest counter on Khalni Heart Expedition.
Remove three quest counters from Khalni Heart Expedition and sacrifice it: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Landfall — Whenever a land you control enters, you may gain 2 life.

Play with the top card of your library revealed.
You may play lands from the top of your library.
Landfall — Whenever a land you control enters, you gain 1 life.

Landfall — Whenever a land you control enters, you may pay . If you do, draw a card.

Trample
Landfall — Whenever a land you control enters, you may create a 4/4 green Beast creature token.

Landfall — Whenever a land you control enters, put a +1/+1 counter on Vinelasher Kudzu.

Play with the top card of your library revealed.
You may play lands from the top of your library.
Landfall — Whenever a land you control enters, you gain 1 life.

Landfall — Whenever a land you control enters, you may pay . If you do, draw a card.

When Avenger of Zendikar enters, create a 0/1 green Plant creature token for each land you control.
Landfall — Whenever a land you control enters, you may put a +1/+1 counter on each Plant creature you control.

Landfall — Whenever a land you control enters, Baloth Woodcrasher gets +4/+4 and gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it’s attacking.)

Trample
Landfall — Whenever a land you control enters, you may create a 4/4 green Beast creature token.

Landfall — Whenever a land you control enters, you may gain 2 life.

Landfall — Whenever a land you control enters, create a 1/1 green Saproling creature token.

Whenever you cast a creature spell, create a 3/3 green Beast creature token.
Whenever you cast a noncreature spell, put three +1/+1 counters on target creature you control.
Landfall — Whenever a land you control enters, you gain 3 life.