Gnottvold Hermit
Creature — Troll
: Transform this creature. Activate only as a sorcery. ( can be paid with either 
or 2 life.)
The Hagi trolls stood little chance against Phyrexia, having killed everyone who came to Gnottvold to warn them.
Chrome Host Hulk
.
Creature — Phyrexian TrollWhenever this creature attacks, up to one other target creature has base power and toughness 5/5 until end of turn.
Now they saw the truth. Divisions between Hagi and Torga were meaningless. There was only Phyrexia.
Artur Nakhodkin
March of the Machine (MOM)
• #188Rulings
Chrome Host Hulk’s ability overwrites all previous effects that set the affected creatures’ power and/or toughness to specific values. Other effects that set these characteristics to specific values that start to apply after the ability resolves will overwrite that part of the effect.
(wotc • 2023-04-14)
Effects that modify the affected creature’s power or toughness without setting it will apply no matter when they started to take effect. The same is true for counters that change the creature’s power or toughness.
(wotc • 2023-04-14)
Rulings
Chrome Host Hulk’s ability overwrites all previous effects that set the affected creatures’ power and/or toughness to specific values. Other effects that set these characteristics to specific values that start to apply after the ability resolves will overwrite that part of the effect.
(wotc • 2023-04-14)
Effects that modify the affected creature’s power or toughness without setting it will apply no matter when they started to take effect. The same is true for counters that change the creature’s power or toughness.
(wotc • 2023-04-14)