Its controller may search their library for a basic land card, put it onto the battlefield, then shuffle
However, you can actually gain life twice here because their ability isnt called lifelink, instead it says you gain life equal to the damage dealt this way
But these two are Bant counters creatures, and while they work really well together, I want to talk about their decks and what people are going to play
The impending mechanic means it can provide land acceleration and mana fixing as early as turn three, and it can continue to provide value when it attacks after becoming a creature four turns later
Black can remove counters, while white can prevent counters from being put on something
Simple, yet incredibly effective and powerful - combine indestructible creatures with tons (20+) wrath effects, and make your opponents completely ineffective