Oliphaunt (HOC-199) [The Hobbit: Eternal-Legal]

Trample (This creature can deal excess combat damage to the player it's attacking.)

Whenever this creature attacks, another target creature you control gets +2/+0 and gains trample until end of turn.

Mountaincycling 1 (1, Discard this card: Search your library for a Mountain card, reveal it, put it into your hand, then shuffle.)