Keyword: Landfall

Landfall — Whenever a land enters the battlefield under your control, you may gain 2 life.

Bloodghast can’t block.
Bloodghast has haste as long as an opponent has 10 or less life.
Landfall — Whenever a land enters the battlefield under your control, you may return Bloodghast from your graveyard to the battlefield.

Landfall — Whenever a land enters the battlefield under your control, Hedron Scrabbler gets +1/+1 until end of turn.

Landfall — Whenever a land enters the battlefield under your control, you may put a quest counter on Ior Ruin Expedition.
Remove three quest counters from Ior Ruin Expedition and sacrifice it: Draw two cards.

Landfall — Whenever a land enters the battlefield under your control, you may have target player lose 3 life. If you do, put three +1/+1 counters on Ob Nixilis, the Fallen.

Defender
Landfall — Whenever a land enters the battlefield under your control, Shoal Serpent loses defender until end of turn.

Hagra Crocodile can’t block.
Landfall — Whenever a land enters the battlefield under your control, Hagra Crocodile gets +2/+2 until end of turn.

Flying
Landfall — Whenever a land enters the battlefield under your control, you may create a 1/1 white Bird creature token with flying.

Landfall — Whenever a land enters the battlefield under your control, target player mills three cards.

Eternity Vessel enters the battlefield with X charge counters on it, where X is your life total.
Landfall — Whenever a land enters the battlefield under your control, you may have your life total become the number of charge counters on Eternity Vessel.

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

Landfall — Whenever a land enters the battlefield under your control, Geyser Glider gains flying until end of turn.

Flying
Landfall — Whenever a land enters the battlefield under your control, you may gain control of target creature for as long as you control Roil Elemental.

Landfall — Whenever a land enters the battlefield under your control, you may put a quest counter on Zektar Shrine Expedition.
Remove three quest counters from Zektar Shrine Expedition and sacrifice it: Create a 7/1 red Elemental creature token with trample and haste. Exile it at the beginning of the next end step.

Landfall — Whenever a land enters the battlefield under your control, you may put a quest counter on Soul Stair Expedition.
Remove three quest counters from Soul Stair Expedition and sacrifice it: Return up to two target creature cards from your graveyard to your hand.

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

Landfall — Whenever a land enters the battlefield under your control, 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 your library.

Landfall — Whenever a land enters the battlefield under your control, Baloth Woodcrasher gets +4/+4 and gains trample until end of turn.

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