Rosa, Resolute White Mage BPhillipYork: Handing out lifelink is potentially a powerful enabler for things that trigger off life gain, but 4 mana is a fair amount to pay for the privilege
Ravensburger has sought to have the case dismissed
Its not even remotely close
Imagine swinging with Ultimate Spider-Man and then doubling up on its counter-doubling effect, or cloning Spider-Man, Peter Parker to stack indestructible buffs whenever you gain life
Cast cheap Vampires to trigger Edgar's eminence ability and flood the board with tokens, then swing with your entire Vampire army once Edgar is in play and giving them all +1/+1. The deck is built around low-cost Vampires with powerful ETB abilities and lifegain synergies that keep you healthy while your opponents fall to the horde
Not only is that okay, but that is recommended as having a card with multiple purposes ultimately gives you more flexibility to react to certain scenarios and bring synergy to your decks theme