Video Game Design and History

Aghanim's Scepter upgrades ultimates for many heroes. The question refers to version 6.68c patch context. All four heroes listed - Viper, Axe, Doombringer (Doom), and Warlock - received Aghanim's Scepter upgrades in that era, making all options correct for this multi-select question.

The question asks about a hero whose previous version could copy other heroes' ultimates. Morphling's old ability 'Morph Replicate' allowed him to copy an enemy hero, including their ultimate abilities, making him the correct answer. Naix, Slithice (Naga Siren), and Earthshaker don't have hero-copying abilities.

Killing Roshan alone at level 1 grants significant experience. In DotA mechanics, Roshan awards enough experience that a solo level 1 killer would jump directly to level 5 (not 2, 4, or 6). This was a well-known fact for players attempting solo Roshan kills.

The question asks for an item that counters both 'Blur' (Dodge passive from Phantom Assassin) and 'Blind' (Active evasion spell like Troll Warlord's or Drunken Haze). MKB (Monkey King Bar) provides true strike that cannot miss and pierces through evasion, countering both passive dodge and active blind effects. BKB blocks magic but not evasion, Manta removes debuffs, and Butterfly gives evasion but doesn't counter it.

BKB (Black King Bar) provides spell immunity, but some abilities pierce it. Primal Roar is a stun that goes through BKB. Berserker's Call is a taunt (disable) that pierces spell immunity. Rain of Chaos creates a pit that disables enemies and also pierces BKB.

In Dota 2, full demons include Balnar (Balnazar), Lycanthrope (wolf demon), Nevermore (shadow fiend), Lucifer (doom), and Pitlord (Abyssal Underlord). Strygwyr is a bloodseeker but not classified as a full demon in the game lore.

Static Link is a channeled ability that drains damage. Breaking line of sight or the source unit hiding does not break the link. Silencing Razor does not interrupt the channel because Static Link continues as long as Razor maintains vision of the target.

All six heroes have armor reduction abilities in their kits. Slark has Essence Shift (passive), Razor has Static Link, Slardar has Corrosive Haze (armor reduction), Bounty Hunter has Jinada (passive armor reduction), Nevermore (Shadow Fiend) has Presence of the Dark Lord (aura), and Vengeful Spirit has Wave of Terror and Vengeance Aura. These abilities reduce enemy armor without needing Desolator.

Techies has the highest base attack range at 700 among the options. Sniper starts with 550 range (increases with Take Aim levels), Drow Ranger starts with 575 range (increases with Marksmanship levels), and Lanaya (Templar Assassin) has very short range (200-250 depending on form). Techies' 700 base range is the highest initial value.

Treant Protector has the highest base strength at level 1 with 25+2.5 strength. Centaur has 23+2.3, Axe has 25+2.2, and Doom has 23+2.4. Treant's base strength of 25 is tied with Axe, but his 2.5 strength gain is slightly higher. However, at exactly level 1 (0 strength gains applied), Treant and Axe are tied at 25 base strength.

Black King Bar (BKB) makes a hero immune to most spells, but Eye of Skadi's slow is a special case that pierces spell immunity. Mana Burn (like from Anti-Mage) and Corruption (like from Doom or Shadow Demon) are blocked by BKB. Skadi's slow is one of the few slows that works through spell immunity, making option C the correct answer.

Both Slark and Magina (Anti-Mage) have mana burn abilities that reduce enemy mana during combat. Slark's Essence Shift (passive) steals attributes including mana when attacking, while Magina's Mana Break (passive) burns mana on each attack. Terror Blade and Sniper do not have innate mana reduction abilities on their attacks without Diffusal Blade.

Chaos Knight has the highest base movement speed among these options at 325. Broodmother has 290 movement speed (in web) or 280 (out of web), Balanar (Night Stalker) has 295 during night and 225 during day, and Lycanthrope (Lycan) has 320 movement speed (or 322 in wolf form with shapeshift). Chaos Knight's base 325 is the highest.

The Syllabear (Lone Druid), Venomancer, and Lich combination was indeed one of the most effective level-1 Roshan killing strategies in DotA Allstars. Syllabear's Spirit Bear could tank Roshan's damage effectively, Venomancer's poison wards provided sustained damage output, and Lich's Frost Blast dealt area damage while slowing Roshan. This combo utilized each hero's level 1 strengths optimally for the unconventional Roshan attempt.

Anub'seran, the Nerubian Weaver, had several key abilities. Shukuchi was his iconic windwalk ability that provided invisibility and bonus movement speed, allowing for quick positioning. Timelapse was his ultimate that could heal him and restore his position to a previous state. 'Watchers' and 'Windwalk' were not actual abilities of Weaver - Watchers was a different hero's ability, and Windwalk was the generic term for invisibility skills like Shukuchi.