The lifelink keyword text doesn't specify anything about dealing combat or non-combat damage
For example, the siege subtype lets you basically assign it to an opponent to protect, then everyone else can attack it and it transforms into the backside when it's defeated
Also, she can potentially draw a bunch of cards
Dacks Duplicate Dack's Duplicate enters as a copy of the strongest creature on the battlefield, and the haste plus the dethrone counter it earns for hitting the player with the highest life total lets it become dangerous right away
Producing multiple land cards, or having effects that trigger when lands come into play is a good way to produce mana
In Tinker Time , this is a fun inclusion, as its another avenue for creating token artifacts with different names