People will often keep from trading or killing it in order to avoid the death-removal-trigger it threatens
convoke doesnt care whether the creatures are summoning sick, so correct sequencing can give you a huge boost of power
You may be in need of a little divine intervention
Im sure its strong with extra turns and such, but Im not sure what the endgame is here
// Sephiroth, One-Winged Angel Flying Super Nova As this creature transforms into Sephiroth, One-Winged Angel, you get an emblem with Whenever a creature dies, target opponent loses 1 life and you gain 1 life. Whenever Sephiroth attacks, you may sacrifice any number of other creatures
If I get another copy of this, Ill likely slot it as one of the big creatures in my Old Stickfingers reanimator deck