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Landfall — Whenever a land enters the battlefield under your control, choose one —
• Create a 2/2 white Cat Beast creature token.
• Put a +1/+1 counter on each creature you control. Those creatures gain vigilance until end of turn.
A landfall ability doesn't trigger if a permanent already on the battlefield becomes a land.
A landfall ability triggers whenever a land enters the battlefield under your control for any reason. It triggers whenever you play a land, as well as whenever a spell or ability puts a land onto the battlefield under your control.
Felidar Retreat's second mode affects only creatures you control at the time the ability resolves, including creatures you control but that for some reason didn't get a +1/+1 counter. Creatures you begin to control later in the turn won't gain vigilance or get a +1/+1 counter.
Whenever a land enters the battlefield under your control, each landfall ability of the permanents you control will trigger. You can put them on the stack in any order. The last ability you put on the stack will be the first one to resolve.
