Activate Manascape Refractor using Faceless Haven's second ability by paying {S}{S}{S}, causing Manascape Refractor to become a 4/3 creature with all creature types until end of turn.
Activate Manascape Refractor using Griffin Canyon's second ability by tapping it, untapping Manascape Refractor and giving it +1/+1 until end of turn.
Repeat step 2.

Infinitely large creature until end of turn

Manascape Refractor

Griffin Canyon

Faceless Haven

Activate Mirran Safehouse using Faceless Haven's second ability by paying {S}{S}{S}, causing Mirran Safehouse to become a 4/3 creature with all creature types until end of turn.
Activate Mirran Safehouse using Griffin Canyon's second ability by tapping it, untapping Mirran Safehouse and giving it +1/+1 until end of turn.
Repeat step 2.

Combos with "Faceless Haven"