Tsuchinoko

Landfall—Whenever a land enters the battlefield
under your control, Tsuchinoko may make a
mythical action. Choose one that hasn't been
chosen this turn —
•Tsuchinoko gets +3/+3 and gains trample until
end of turn.
•Tsuchinoko gets +0/+2 and gains deathtouch
until end of turn.
•Tsuchinoko becomes legendary until end of turn
and you become the monarch.