Ninja Teen doesn't prevent automatically passing priority despite creatures available to cast from GY
A fully levelled Ninja Teen enchantment gives all your creatures the sneak ability. It also allows you to cast creatures from your graveyard by paying its sneak cost. This should in theory allow you to cast any creature from your yard you can afford, and therefore prevent the game automatically passing priority when it doesn't detect any actions available to you. This just potentially cost me a win.
The screenshot is from after it had automatically passed out of my second main phase and moved to my opponents turn.
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Rezzahan#77802
commented
Sneak only works in the declare blockers step after blockers have been declared. The Sneak cost always includes returning an unblocked attacking creature to your hand. You can't sneak anything out in any other step or phase.
Sneak is similar to ninjutsu, except it is casting a spell instead of activating an ability, and sneak is way more limited in when you can use it, since ninjutsu can be used during the entire remainder of the combat phase after blockers have been declared, while sneak is limited to the declare blockers step only.