Range and Targeting

Do Range buffs apply to Powers that affect "a land with your Presence" or "one of your lands"?
No. "A land with your Presence" specifies a requirement for the land you're affecting (similar to, eg, "a land with Dahan" or "a land with Blight"), not a numeric Range. While it is usually the same in practice as "a land at Range 0", when using effects that modify Range the distinction matters.

For powers like Punish Those Who Trespass or Firestorm that have a base effect with normal range and a further effect referring to "lands where you have presence", the range on the base effect can be extended, but the further part cannot.

For instance, if you reach all the thresholds of Punish Those Who Trespass and have extended range, you can use the base effect to deal damage in a distant land and use the further part to deal damage where you have presence (without extension).
(Discussion elsewhere)  Tags: Range, Presence, Targeting, Reaching Grasp, 10 more...

Can you place Presence during Growth based on range from your Presence in the Ocean?
Yes, even though the Oceans are not a land at that time (since Growth is not a Power or Blight).

Once Presence is in the Ocean, it is treated normally until/unless the Ocean is no longer in play (because Ocean's Hungry Grasp loses all Presence on that board).
(Discussion elsewhere)  Tags: Ocean's Hungry Grasp, Ocean In Play (Ocean's Hungry Grasp)

When choosing Beasts to move with Flocking Red-Talons, which land do you measure Range from?
The target land. All text in land-targeting Powers is resolved in relation to the target land unless otherwise specified.
(Discussion elsewhere)  Tags: Range, Flocking Red-Talons, Inspire the Release of Stolen Lands, Ravaged Undergrowth Slithers Back to Life, 8 more...

Can you target a power on a land where you know it won't do anything? For instance, target a land without Explorers with a "Push 1 Explorer" Power?
Yes. You can target a power on any land, as long as it satisfies the targeting and range restrictions. ("Do as much as you can" only refers to resolving a Power, not how you use it in the first place.)

Obvious reasons you might want to do this include Gathering Presence (if you're Shroud of Silent Mist) or placing Disease (if Scream Disease Into the Wind has been played on you). There are other less-likely cases too.
Tags: Targeting, Scream Disease Into the Wind, Mists Shift and Flow (Shroud of Silent Mist), Shroud of Silent Mist, 1 more...

Does Shadows of the Dahan <i>("...you may pay 1 Energy to target a land with Dahan regardless of the Power's Range")</i> let you ignore other targeting requirements?
No. Only Range - the number of lands distant - is ignored.

All other targeting requirements still apply. This includes source restrictions, so if, e.g., a Power must be targeted from a Sacred Site and you have none, Shadows of the Dahan won't let you use it, or if it needs to be targeted from a Jungle, you need Presence in a Jungle to use it. The same applies for target restrictions other than Range, like lands with Invaders, unblighted lands, or restrictions on the target terrain; these must also be obeyed.
(Discussion elsewhere)  Tags: Range, Targeting, Shadows of the Dahan (Shadows Flicker Like Flame), Finder of Paths Unseen, 3 more...