The warp ability adds flexibility, letting it reappear later for more value, and it pairs especially well with blink effects like Ephemerate to reuse the enter the battlefield trigger, and more importantly, make it stay for good instead of warping it out
Both Ravenous Baloth and Wall of Mulch, for example, were designed simply as cards that sacrificed themselves for their effects
At the beginning of each opponent's end step, if that player controls more lands than you, you may search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle
This is an advantage Lorcana has over something like Magic: The Gathering, if you ask me
If we go a wee bit deeper then I'll add that having trample makes the Primus an excellent candidate for pumping power, which is why I personally love it in my Xenagos, God of Revels deck
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