Endoskeleton
{2}
Artifact
You may choose not to untap ~this~ during your untap step.
{2}, {T}: Target creature gets +0/+3 for as long as ~this~ remains tapped.
Spirit Shield
{3}
Artifact
You may choose not to untap ~this~ during your untap step.
{2}, {T}: Target creature gets +0/+2 for as long as ~this~ remains tapped.