\documentclass[]{standalone}

% Pakete dazuladen
\input{libs.tex}
% Farbdefinitionen laden
\input{colors.tex}
% \card-Commands laden
\input{tikzcards.tex}

\begin{document}
\begin{tikzpicture}
\cardtypeUnit{Captain}
\cardbuycost{7}
\cardsplitcontent{Health: 1\\ Movement: 1\\ Attack: 1}{Other units in the same pile have no upkeep cost}
\cardplaycost{2}\cardmodule{nautics}
\cardborder
\end{tikzpicture}
\end{document}