Anastasia, Knight of Valor

Haste, Trample, Lifelink
At the beginning of your end step, if you both
own and control Anastasia, Knight of Valor and
an artifact named Brightstar, Seraph Sword , exile them, then meld them into Anastasia Brightstar.
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"She fights like she has done it all before despite just barely being knighted."-Thalia of Thraben