Kithkin Zephyrnaut

Creature — Kithkin Soldier    (CMC:3)

Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Kithkin Zephyrnaut, you may reveal it. If you do, Kithkin Zephyrnaut gets +2/+2 and gains flying and vigilance until end of turn.

16 MOR • ENQuinton Hoover & Val Mayerik

™ & © 1993—2008 Wizards of the Coast

Legal in: Modern,Lorwyn-Shadowmoor Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Classic,Singleton 100,Commander

Oracle Text (click to copy):

Kithkin Zephyrnaut {2}{W} Creature — Kithkin Soldier Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Kithkin Zephyrnaut, you may reveal it. If you do, Kithkin Zephyrnaut gets +2/+2 and gains flying and vigilance until end of turn. 2/2

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View this MTG card on Gatherer

4/1/2008
Kinship is an ability word that indicates a group of similar triggered abilities that appear on _Morningtide_ creatures. It doesn't have any special rules associated with it. 
4/1/2008
The first two sentences of every kinship ability are the same (except for the creature's name). Only the last sentence varies from one kinship ability to the next.
4/1/2008
You don't have to reveal the top card of your library, even if it shares a creature type with the creature that has the kinship ability.
4/1/2008
After the kinship ability finishes resolving, the card you looked at remains on top of your library.
4/1/2008
If you have multiple creatures with kinship abilities, each triggers and resolves separately. You'll look at the same card for each one, unless you have some method of shuffling your library or moving that card to a different zone.
4/1/2008
If the top card of your library is already revealed (due to Magus of the Future, for example), you still have the option to reveal it or not as part of a kinship ability's effect.

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