i know the answer but need conformation

1. is boost a payment effect?

Boost

“Boost” is a keyword that represents a continuous power that functions in any zone the character it’s on can be played from, and a second continuous power that functions while that character is in play. The phrase “Boost <cost>: <text>” means, “To play, you may pay <cost>." and "<text> is active only if this card was played this turn and <cost> was paid for it." Active text generates powers as normal; inactive text is treated as if it did not exist. All boost costs are expressed in resource points unless noted otherwise. The phrase "Boost—<cost>: <text>" means the same thing, but <cost> will be an action, not a number of resource points.

Technically it's an additional cost.

Almost all payment powers are notated by -> (arrow). The only immediate exception that comes to mind is evasion. Its a good thing to note if it does have -> it is a payment power.

is the boost effect on recuritment chainable

Depends on what the boost effect is.

If I call Hulk with Omnipotence, does Hulk 5's Boost effect get negated by Omnipotence?

CC

That's a good one

Hmmmm..

I believe Hulk 5 drop's boost power is a triggered effect not a payment.
Since Hulk's power reads:

Then "when" signifies a triggered power, shown by rule number 502.1 in the rules reference.

Omni does not stop any of the Hulk boosts, as they are not payment powers. Payment powers ALWAYS have an arrow in them.

what about evasion isnt that a payment?

Evasion is a KEYWORD that represents a payment power.

So if you Omni an evader, they will keep the Evasion keyword (so they'll still key off any modifiers that look for Evaders), but they lose the ability to actually evade.

Maybe an odd question, but what effect has evasion?

For example Speed Demon (MSM089) is in play and the opponent is attacking him or is it not possible to attack him because of evasion? - I didn't read something about evasion in the rulebook I have,but maybe evasion is a newer feature.

Evasion (Stun this character -> Recover this character at the start of the recovery phase this turn.)