Martyn, Fluid Exhoticist

0: Target creature or planeswalker becomes a 3/3 green shapeshifter with trample until end of turn. Transform Martyn, keeping the same loyalty.
-1: You draw a card and lose 1 life. Transform Martyn, keeping the same amount of loyalty counters.
-4: You get an emblem with "Paired creatures you control have trample, deathtouch, and indestructible."