Image of all the issues and applied changes in the spoiler
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Here are the modified sections of dota_english.txt required for these changes and additions. Changed values are marked red and new values are marked blue.

Code:
//ANTIMAGE
		"DOTA_Tooltip_ability_antimage_mana_break"										"Mana Break"
		"DOTA_Tooltip_ability_antimage_mana_break_Description"							"Tears asunder the arcane essences of enemies with each attack, burning their mana and damaging them based on how much mana was burned.\n\nMana Break is a Unique Attack Modifier, and does not stack with other Unique Attack Modifiers."
		"DOTA_Tooltip_ability_antimage_mana_break_Lore"									"A modified technique of the Turstarkuri monks' peaceful ways is to turn magical energies on their owner."
		"DOTA_Tooltip_ability_antimage_mana_break_Note0"								"Does not stack with Diffusal Blade's Mana Break."
		"DOTA_Tooltip_ability_antimage_mana_break_Note1"								"Mana Break's damage cannot crit or cleave, but can lifesteal with aura-based lifesteal sources."
		"DOTA_Tooltip_ability_antimage_mana_break_mana_per_hit"							"MANA BURNED PER HIT:"
		"DOTA_Tooltip_ability_antimage_mana_break_damage_per_burn"						"DAMAGE PER BURNED MANA:"
		"DOTA_Tooltip_ability_antimage_blink"											"Blink"
		"DOTA_Tooltip_ability_antimage_blink_Description"								"Instantly teleports over a short distance, avoiding most ranged attacks in the process."
		"DOTA_Tooltip_ability_antimage_blink_Lore"										"In his encounter with the Dead Gods, Anti-Mage learned the value of being elusive."
		"DOTA_Tooltip_ability_antimage_blink_Note0"										"Blink disjoints projectiles upon cast."
		"DOTA_Tooltip_ability_antimage_blink_Note1"										"Cannot be cast while rooted."
		"DOTA_Tooltip_ability_antimage_blink_blink_range"								"RANGE:"
		"DOTA_Tooltip_ability_antimage_spell_shield"									"Spell Shield"
		"DOTA_Tooltip_ability_antimage_spell_shield_Description"						"Anti-Mage's skin hardens against spells, allowing him to resist magical damage easier.\n\nUpgradable by Aghanim's Scepter."
		"DOTA_Tooltip_ability_antimage_spell_shield_aghanim_description"    			"Causes Spell Shield to passively block and reflect a targeted spell once in a short while."
		"DOTA_Tooltip_ability_antimage_spell_shield_Lore"								"Years of meditation and obsession with revenge have hardened Anti-Mage's skin against mystical opponents."
		"DOTA_Tooltip_ability_antimage_spell_shield_Note0"								"Stacks multiplicatively with other magic resistance sources."
		"DOTA_Tooltip_ability_antimage_spell_shield_Note1"								"Spell Shield's spell blocking and reflecting take priority over those of Linken's Sphere and Lotus Orb."
		"DOTA_Tooltip_ability_antimage_spell_shield_spell_shield_resistance"			"%MAGIC RESISTANCE BONUS:"
		"DOTA_Tooltip_ability_antimage_mana_void"										"Mana Void"
		"DOTA_Tooltip_ability_antimage_mana_void_Description"							"Creates a void caused by the lack of mana on a target enemy, briefly stunning it while also damaging the target and nearby allies based on how much mana the target has missing."
		"DOTA_Tooltip_ability_antimage_mana_void_Lore"									"After bringing enemies to their knees, Anti-Mage punishes them for their use of the arcane arts."
		"DOTA_Tooltip_ability_antimage_mana_void_Note0"									"Only the primary target is stunned."
		"DOTA_Tooltip_ability_antimage_mana_void_Note1"									"Damage is calculated based on the primary target's mana, but applied to all enemies within the radius."
		"DOTA_Tooltip_ability_antimage_mana_void_mana_void_damage_per_mana"				"DAMAGE PER MISSING MANA:"
		"DOTA_Tooltip_ability_antimage_mana_void_mana_void_ministun"					"STUN DURATION:"
		"DOTA_Tooltip_ability_antimage_mana_void_mana_void_aoe_radius"					"RADIUS:"
		"npc_dota_hero_antimage_bio"													"The monks of Turstarkuri watched the rugged valleys below their mountain monastery as wave after wave of invaders swept through the lower kingdoms. Ascetic and pragmatic, in their remote monastic eyrie they remained aloof from mundane strife, wrapped in meditation that knew no gods or elements of magic. Then came the Legion of the Dead God, crusaders with a sinister mandate to replace all local worship with their Unliving Lord's poisonous nihilosophy. From a landscape that had known nothing but blood and battle for a thousand years, they tore the souls and bones of countless fallen legions and pitched them against Turstarkuri. The monastery stood scarcely a fortnight against the assault, and the few monks who bothered to surface from their meditations believed the invaders were but demonic visions sent to distract them from meditation. They died where they sat on their silken cushions. Only one youth survived--a pilgrim who had come as an acolyte, seeking wisdom, but had yet to be admitted to the monastery. He watched in horror as the monks to whom he had served tea and nettles were first slaughtered, then raised to join the ranks of the Dead God's priesthood. With nothing but a few of Turstarkuri's prized dogmatic scrolls, he crept away to the comparative safety of other lands, swearing to obliterate not only the Dead God's magic users--but to put an end to magic altogether. "
Code:
	//=================================================================================================================
	// Ability: Antimage Mana Break
	//=================================================================================================================
	"antimage_mana_break"
	{
		// General
		//-------------------------------------------------------------------------------------------------------------
		"ID"					"5003"														// unique ID number for this ability.  Do not change this once established or it will invalidate collected stats.
		"AbilityBehavior"				"DOTA_ABILITY_BEHAVIOR_PASSIVE"
		"AbilityUnitDamageType"			"DAMAGE_TYPE_PHYSICAL"		
		"SpellImmunityType"				"SPELL_IMMUNITY_ENEMIES_NO"

		// Special	
		//-------------------------------------------------------------------------------------------------------------
		"AbilitySpecial"
		{
			"01"
			{
				"var_type"				"FIELD_INTEGER"
				"mana_per_hit"			"28 40 52 64"
			}
			"02"
			{
				"var_type"				"FIELD_FLOAT"
				"damage_per_burn"		"0.6"
				"CalculateSpellDamageTooltip"	"0"
			}
		}
	}