Teodora Lupescu, Psychic

+2: Flip a coin, if the result it's Heads, add a +1/+1 counter on a creature you own, if it's Tails, add a -1/-1 counter instead. Then add 1 counter.
-1: Eliminate one or more counters: For each counter, the target opponent loses 1 hp, the user gains 1 hp.
-5: Summon a "Nikolai, the Specter" 5/5 token with Flying, Vigilance, and Trample. A player can own only 1 "Nicolai, the Specter" at a time.