Final Fantasy Commander

Legendary Creature — Human Artificer

Whenever you put one or more counters on a creature, until end of turn, that creature can't be blocked by creatures your opponents control.
Steal — {1}, {T}: Move a counter from target creature an opponent controls onto target creature you control. Activate only as a sorcery.

Rikku, Resourceful Guardian

Instant

The owner of target spell, nonland permanent, or card in a graveyard puts it on their choice of the top or bottom of their library.

Endless Detour

2016 Heroes of the Realm

Legendary Creature — Dragon

Flash
Flying, trample, haste
When Nira, Hellkite Duelist enters, the next time you would lose the game this turn, instead draw three cards and your life total becomes 5.