Metasthesia, Celestial Poet

Sagas you own may be cast from your graveyard.
When Metasthesia enters the battlefield,
distribute X total lore and/or +1/+1 counters
among any number of target permanents.
Pay {1} for each lore counter on Metasthesia,
then put a lore counter on it: Until end of turn,
target permanent gets +0/+1 and gains or loses
the type, subtype, or supertype of your choice.
Put a loyalty counter on it.