Canopy Baloth

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

Murasa Ranger

Landfall — Whenever a land you control enters, you may pay {3}{G}. If you do, put two +1/+1 counters on this creature.

Kazandu Nectarpot

Landfall — Whenever a land you control enters, you gain 1 life.

Island

Wave-Wing Elemental

Flying
Landfall — Whenever a land you control enters, this creature gets +2/+2 until end of turn.

Tatyova, Benthic Druid

Landfall — Whenever a land you control enters, you gain 1 life and draw a card.

Snapping Gnarlid

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

Forest

Territorial Scythecat

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Landfall — Whenever a land you control enters, put a +1/+1 counter on this creature.