Najeela, the Blade-Blossom | Tervigon | Phyrexian Altar

Cards

Deal combat damage to a player with
Tervigon
Tervigon triggers, creating at least six 1/1 Tyranid Warrior tokens
Activate
Phyrexian Altar by sacrificing five Tyranid Warrior tokens, adding ({W} magic symbol) ({U} magic symbol) ({B} magic symbol) ({R} magic symbol) ({G} magic symbol)
Activate
Najeela by paying ({W} magic symbol) ({U} magic symbol) ({B} magic symbol) ({R} magic symbol) ({G} magic symbol) , untapping all attacking creatures, giving them trample, lifelink and haste, and gaining an additional combat phase after this one
Repeat